taxonID	type	description	language	source
03A5D94A7D52FF883825FC6B5DB1F84F.taxon	description	Fig. 1, Table 1	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D52FF883825FC6B5DB1F84F.taxon	materials_examined	Material examined INDIA • 4 ♀♀, 1 ♂♂; Kerala State, Kozikode district, Ramanatukkara; 11 ° 17 ʹ 15.83 ʺ N, 75 ° 50 ʹ 57.57 ʺ E; 28 Oct. 2017; soil samples collected from around roots of rotten banana rhizome from Vizhayour; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Mesodorylaimus potus / 1 – 2.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D52FF883825FC6B5DB1F84F.taxon	discussion	Remarks Heyns (1963) described M. potus from South Africa. Basson & Heyns (1974), Heyns & Kruger (1983), and Botha & Heyns (1992) reported this species from other localities in South Africa. Loof & Heyns (1982) discussed the morphological variations within M. potus and synonymized M. globiceps Loof, 1964 with this species. Further, Ciobanu et al. (2004 a), Ahmad & Ahmad (2001), and Uzma & Ahmad (2015) reported it from Romania and Goa India, respectively, where the latter population differed from the earlier described specimens by having a smaller size and a lower number of ventromedian supplements. The present population conforms well with all the previously described populations; however, it slightly differs from the other Indian population described by Ahmad & Ahmad (2001) in having a slightly longer body (1.13 – 1.21 vs 0.87 – 1.08 mm), longer odontophore (16 – 17 vs 13 – 15 μm), shorter female tail (95 – 120 vs 130 – 161 μm) and higher number of ventromedian supplements (16 vs 12 – 13). These variations may be regarded as minor intraspecific variations. Several populations of M. potus described from different localities in South Africa have a very wide morphometric range. It seems more than one species has been identified as M. potus. As can be seen from the two Indian populations from the Western Ghats itself, there are definite morphometric differences. However, comparing it with the South African population, it all comes in the range. There is a need to restudy the South African populations to make the things clearer.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF893845FE855DECFB1E.taxon	description	Fig. 2, Table 1	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF893845FE855DECFB1E.taxon	materials_examined	Material examined INDIA • 7 ♀♀; Goa State, Curchorem district, Selbon village; 15 ° 15 ′ 0.468 ″ N, 74 ° 6 ′ 30.78 ″ E; depth 10 – 15 cm; 14 Apr. 2016; soil sample collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Mesodorylaimus guarani / 1 – 2 • 3 ♀♀; Karnataka State, Uttar Kannada district, Manchikeri, Yellapur; 14 ° 51 ′ 14.328 ″ N, 74 ° 48 ′ 58.176 ″ E; same data as for preceding; AMU / ZD / NC, slide reference number AMU / ZD / NC / Mesodorylaimus guarani / 3.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF893845FE855DECFB1E.taxon	discussion	Remarks Andrássy (1968) described M. guarani from Paraguay. Ahmad & Shaheen (2004) reported this species from Costa Rica. Uzma & Ahmad (2015) recorded it from Arunachal Pradesh, India. The present specimens conform well with the original description as well as with the population of Costa Rica; however, it shows minor differences from the specimens described by Uzma & Ahmad (2015) in having a slightly longer odontophore (16 – 18 vs 13.0 – 14.5 µm) and a shorter rectum (26 – 32 vs 38 – 41 µm). The present population differs from the two earlier described populations in having a comparatively longer prerectum (prerectum 1.3 – 1.5 × anal body diameter in the population of Paraguay; 1.9 – 2.6 × in the population of Costa Rica compared to the present population where the prerectum is 2.7 – 3.3 × as long as anal body diameter). This may be considered as a geographical variation. Andrássy (1968) described its vulva as a transverse slit; however, in the present specimens the vulva appears pore-like (confirmed by a specimen in dorso-ventral position). There is a possibility that in an earlier described population no dorso-ventral specimen was available for study. This species is reported here for the first time from the Western Ghats of India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF853869FAB15F52FD0E.taxon	description	Fig. 3, Table 2	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF853869FAB15F52FD0E.taxon	materials_examined	Material examined INDIA • 5 ♀♀; Maharashtra State, Raigad district, Borli; 18 ° 30 ′ 30.528 ″ N, 72 ° 55 ′ 2.208 ″ E; depth 10 – 15 cm; 11 Apr. 2016; soil sample collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Mesodorylaimus chamoliensis / 1 – 2.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF853869FAB15F52FD0E.taxon	description	Description Male Unknown. No traces of sperm present in female genital tract.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D55FF853869FAB15F52FD0E.taxon	discussion	Remarks Ahmad (1995) described M. chamoliensis from Chamoli Hills, Uttarakhand, India. Ahmad & Araki (2003) reported this species from Japan. Later, Baniyamuddin & Ahmad (2006), Mushtaq & Ahmad (2006), and Uzma & Ahmad (2015) described this species from different states of India, covering areas of Arunachal Pradesh, Jammu and Kashmir, and Meghalaya, respectively. The present specimens conform well with all the previously described populations except for having a slightly shorter body (0.74 – 0.82 vs 0.78 – 1.03 mm); posterior vulva position (V = 49 – 53 vs 43 – 48) and shorter tail (118 – 129 vs 154 – 226 µm). In the present specimens, the tail appears to be slightly broken near the posterior end due to which the morphometric values differ from previously described populations. This species is reported for the first time from the Western Ghats of India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF853BBBFCA05F3FF9EB.taxon	description	Fig. 4, Table 2	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF853BBBFCA05F3FF9EB.taxon	materials_examined	Material examined INDIA • 6 ♀♀, 6 ♂♂; Maharashtra State, Raigad district, beside Phansad Wildlife Sanctuary road, near Usoli flyover; 18 ° 26 ′ 38.508 ″ N, 72 ° 56 ′ 26.376 ″ E; depth 5 – 15 cm; 4 Apr. 2016; soil sample collected from around roots of paddy; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Mesodorylaimus keralaensis / 1 – 4.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF853BBBFCA05F3FF9EB.taxon	discussion	Remarks Ahmad & Ahmad (2001) described this species from the soil around the roots of the paddy plant (Oryza sativa L.) in the Trivandrum district, Kerala. Uzma & Ahmad (2015) restudied the paratypes of this species. Since then, there has been no record. The present population conforms well with the description of the type population except for having a larger expanded part of the pharynx (37 – 38 % vs 32 – 34 %); a shorter cardia (8 – 11 vs 14 – 16 µm); a shorter prerectum (2.6 anal body width vs 3.0 – 4.3 anal body width in the original description), and a higher number of ventromedian supplements (12 – 14 vs 12 – 13), which may be considered minor intraspecific variations.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF803BB3F9C55D40FD2D.taxon	description	Fig. 5, Table 2	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF803BB3F9C55D40FD2D.taxon	materials_examined	Material examined INDIA • 6 ♀♀; Karnataka State, Shimoga district, Sagar-Hosanagar road, Tirtha village; 14 ° 2 ′ 34.8144 ″ N, 75 ° 7 ′ 6.6144 ″ E; depth 10 – 15 cm; 27 Oct. 2018; soil samples collected from around roots of shrubs (unidentified) in forest; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Mesodorylaimus longicaudatus / 1 – 3.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF803BB3F9C55D40FD2D.taxon	description	Description Male Unknown. No trace of sperm is present in the female genital tract.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D59FF803BB3F9C55D40FD2D.taxon	discussion	Remarks Ahmad & Araki (2003) described this species from the soil around the roots of forest trees in temperate deciduous forests in Japan. There is no record of this species after its original description. The present population conforms well with the description of the type population in the shape of the lip region, the nature of the odontostyle and the position of S 2 N except for having a longer cardia (14 – 20 vs 9 – 12 µm); a slightly posterior vulva (V = 43 – 46 vs 42 – 44) and a shorter tail (192 – 257 vs 264 – 316 µm; c = 4.9 – 6.3 vs 3.9 – 4.3; c’ = 10.4 – 14.3 vs 14.8 – 16.5). These minor morphometric differences might be due to the broken tail tip in all the specimens. This species is recorded here for the first time from the Western Ghats and India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5CFF80384AFCBB582BF8E8.taxon	description	Fig. 6, Table 3	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5CFF80384AFCBB582BF8E8.taxon	materials_examined	Material examined INDIA • 2 ♀♀, 1 ♂; Maharashtra State, Satara district, about 100 m away from bank of Kaas Pond bridge; 17 ° 43 ′ 9.48 ″ N, 73 ° 48 ′ 52.092 ″ E; depth 5 – 10 cm; 13 Apr. 2016; soil samples collected from around roots of grasses from dense forest; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Laimydorus siddiqii / 1 – 2 • 2 ♀♀; Maharashtra State, Raigad, near Mahabaleshwar Forest office; 17 ° 55 ′ 6.5028 ″ N, 73 ° 39 ′ 30.6864 ″ E; depth 10 – 15 cm; 4 Apr. 2016; soil samples collected from around roots of fern plants (unidentified); AMU / ZD / NC, slide reference number AMU / ZD / NC / Laimydorus siddiqii / 3.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5CFF80384AFCBB582BF8E8.taxon	discussion	Remarks Baqri & Jana (1982) described L. siddiqii from West Bengal, India. Ahmad & Ahmad (2002) redescribed it based on material collected from different states in India including Andhra Pradesh, Goa, Kerala, and Uttarakhand. The present population fits well with the type population as well as Ahmad & Ahmad’s (2002) populations but differs from the former in having a shorter tail (182 – 260 vs 322 – 363 µm; c = 8.8 – 11.4 vs 7.8) and longer spicules (60 vs 53 – 57 µm). From the latter, it differs in having a slightly longer spicule (60 vs 50 – 57 µm). This species has always been recorded from the paddy fields and hence, Ahmad & Ahmad (2002) rightly pointed out that there seems to be some sort of habitat specificity in this species for the paddy field and wet soil. The present specimens in addition to their morphometric similarity with the earlier described populations, were also collected from wet soil in a dense forest region close to the Kaas Pond and Mahabaleshwar Forest, hence it agrees with Ahmad & Ahmad’s (2002) view of habitat specificity in this species for the paddy field and wet soil.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5EFF9D3860F8905846FC15.taxon	description	Fig. 7, Table 4	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5EFF9D3860F8905846FC15.taxon	materials_examined	Material examined INDIA • 3 ♀♀, 1 ♂; Karnataka State, Shivamogga district, Mattur; 13 ° 52 ʹ 26 ʺ N, 75 ° 33 ʹ 32 ʺ E; depth 5 – 10 cm; 26 Oct. 2018; soil samples collected from around roots of paddy plant; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Calodorylaimus andrassyi / 1 – 2.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D5EFF9D3860F8905846FC15.taxon	discussion	Remarks Baqri & Jana (1982) described Calodorylaimus andrassyi from West Bengal, India. Loof (1996) synonymized the genus Laimydorus Siddiqi, 1969 with Calodorylaimus Andrássy, 1969, and transferred C. andrassyi to Laimydorus. Later, several authors rejected its synonymy and considered Calodorylaimus as a valid genus. Calodorylaimus andrassyi Baqri & Jana, 1982 is distinguished by having a long slender body (a = 60 – 65); an offset lip region; a relatively long odontostyle; a longitudinal vulva in females, males with ventromedian supplements arranged in groups, its prerectum extending well beyond the range of supplements. In their original description, Baqri & Jana (1982) described the vulva as a transverse slit; however, Ahmad & Ahmad (2002) reported this species from South India (Hyderabad and Mangalore) and described the vulva to be longitudinal rather than transverse. Their claim of a longitudinal vulva in C. andrassyi is also supported in the present study. The present population from the Western Ghats conforms well with the description of the type population but differs in having a slightly longer odontostyle (30.0 – 30.5 vs 26 – 29 μm) and comparatively longer tail (371 – 388 vs 312 – 367 μm). The present specimens also fit with the population of South India except in having a slightly longer odontostyle (30.0 – 30.5 vs 23 – 29 μm), a longer odontophore (35 – 37 vs 23 – 32 μm) and longer spicules (55 vs 43 – 53 µm). These differences may be attributed to intraspecific variations.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	description	urn: lsid: zoobank. org: act: 3711 E 4 C 1 - 0226 - 4 C 49 - A 5 BF- 5 DF 2 D 5 D 2 EBC 6 Figs 8 – 9, Table 4	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	diagnosis	Diagnosis Calcaridorylaimus indicus sp. nov. is characterized by having a 1.47 – 1.72 mm (female) or a 1.41 – 1.56 mm (male) long and slender body (a = 45.9 – 57.4); a hardly offset lip region with amalgamated lips, an amphid fovea cup-shaped, guiding ring single; an amphidelphic female genital system; a longitudinal vulva and an elongate tail with rounded terminus. Males have 36 – 39 μm long dorylaimoid spicules with spur present before its distal end, 12 – 15 almost equally spaced ventromedian supplements and a short conoid tail with bluntly rounded terminus.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	etymology	Etymology The new species is named Calcaridorylaimus indicus sp. nov. because of its distribution in India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	materials_examined	Type material Holotype INDIA • ♀; Goa State, South Goa district, near bus stop of Canacona city; 15 ° 0 ′ 28.908 ″ N, 74 ° 2 ′ 40.488 ″ E; depth 5 – 10 cm; 18 Apr. 2016; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference number AMU / ZD / NC / Calcaridorylaimus indicus sp. nov. / 1. Paratypes INDIA • 4 ♀♀, 4 ♂♂; same data as for holotype; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Calcaridorylaimus indicus sp. nov. / 2 – 5 • 1 ♀, 1 ♂; same data as for holotype; ZSIC, slide reference number AMU / ZD / NC / Calcaridorylaimus indicus / 6.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	description	Description Female Body slender, 1.47 – 1.72 mm long, more or less curved ventrad upon fixation, tapering towards both extremities, posteriorly ending in an elongate conoid tail. Cuticle thin, 1.0 µm thick in anterior region, 1.5 µm at mid body and 2.0 – 2.5 µm on tail; outer layer with fine transverse striations. Lateral chords about 23 – 26 % of mid body diameter. Lateral, dorsal and ventral body pores indistinct. Lip region offset by slight depression, 2.3 – 2.6 × as wide as high or about 2 / 7 – ⅓ of body diameter at neck base. Lips amalgamated, slightly angular; labial papillae not protruding above labial contour. Amphids cup-shaped, their aperture occupying about ½ of lip region diameter. Odontostyle dorylaimoid, straight, 1.3 – 1.4 × as long as lip region diameter, its aperture about 2 / 5 of its length. Odontophore simple, rod-like, 1.3 – 1.4 × as long as odontostyle. Guiding ring single, at 0.9 – 1.0 × lip region diameter from anterior end. Nerve ring encircling anterior slender part of pharynx at 35 – 38 % of neck length from head end. Pharynx consisting of slender anterior part, expanding gradually into posterior expanded part 7.3 – 9.9 × as long as wide or 3.9 – 5.1 × as long as corresponding body diameter, occupying about 40 – 47 % of total neck length. Pharyngeal gland nuclei and their orifices are located as follows: DO = 61 – 62; DN = 63 – 64; DO-DN = 2.0 – 2.4; S 1 N 1 = 80 – 84; S 1 N 2 = 84 – 85; S 2 N = 90 – 91; S 2 O = 91 – 92. Cardia rounded to conoid, slightly less than ½ as long as corresponding body diameter, surrounded by intestinal tissue. Female genital system amphidelphic, measuring 178 – 203 µm (anterior branch) and 206 – 264 µm (posterior branch) long. Ovaries reflexed, measuring 51 – 73 µm (anterior) and 51 – 88 µm (posterior) long; oocytes arranged first in two or more rows, then in single row. Oviduct joining ovary subterminally, measuring 89 – 102 µm or 2.8 – 3.3 (anterior) and 93 – 167 µm or 3.1 – 5.4 (posterior) × as long as corresponding body diameter. Sphincter distinct at oviduct-uterus junction. Uterus simple, measuring 86 – 103 µm or 2.8 – 3.4 × (anterior) and 206 – 264 µm or 3.1 – 3.8 × (posterior) as long as corresponding body diameter. Spindle-shaped sperms present in uterus. Vulva longitudinal. Vagina extending inwards, 20 µm or about ⅔ of mid body diameter; pars distalis vaginae 1.5 – 2.0 µm; pars refringens vaginae with two divergent, well separated sclerotized pieces and cuticularized intermediate area, each measuring 4.0 × 1.5 – 2.0 µm with combined width of 9 – 10 µm; pars proximalis vaginae 15 – 16 × 10 – 10.5 µm with convex walls encircled by weak musculature. Prerectum 2.7 – 4.8 × and rectum 1.6 – 1.8 × as long as anal body diameter. Tail elongate, tapering abruptly at first, then more gradually to a finely rounded terminus, 6.6 – 7.8 × as long as anal body diameter. Hyaline part comprising 20 % of total tail length. Two caudal pores present on each side. Male General morphology similar to female except for posterior region generally more curved and twisted ventrally, 1.41 – 1.56 mm long. Genital system diorchic, testes opposed, sperms spindle-shaped, measuring 5 × 2 µm long. Spicules typical dorylaimoid, curved ventrad, relatively robust, 4.9 – 5.4 × as long as wide and 1.6 – 1.7 × as long as cloacal body diameter. Head well developed, occupying 26 – 35 % of spicules total length, dorsal contour regularly convex, ventral contour bearing moderately distinct hump at 15.5 – 16.5 µm from anterior end of spicule. Spur present dorsally before distal tip. Median piece 8.5 – 9.5 × as long as wide, occupying about 27 – 29 % of spicules maximum width, not reaching spicule distal end. Posterior end 3.0 – 3.5 µm wide. Lateral guiding pieces well developed, 3.6 – 5.3 × as long as wide. In addition to adcloacal pair, situated at 3 – 4 μm from cloacal aperture, series of 12 – 14 almost regularly spaced, comparatively weakly developed ventromedian papillae located beyond range of spicules, posterior ventromedian supplements located at 27 – 30 μm from adcloacal pair. Prerectum very long, 5.3 – 6.6 × as long as cloacal body diameter, starting well anteriorly to range of supplements. Rectum 1.4 – 1.7 × as long as cloacal body diameter. Tail short, dorsally convex-conoid with distinct ventral concavity and bluntly rounded terminus, about 1.0 – 1.1 × as long as cloacal body diameter, hyaline part small, 2.0 µm long. Caudal pores three pairs: one lateral near anus, one subventral and one subdorsal near terminus present on each side of tail.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	materials_examined	Type habitat and locality Soil samples collected from around the roots of grasses (unidentified) near bus stop of Canacona city, South Goa district, Goa, India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D41FF99382FFBE158FEF90D.taxon	discussion	Remarks The new species differs from the type species C. calcalifer Andrássy, 1986 in having a longer and more slender body (1.47 – 1.72 vs 1.18 – 1.30 mm; a = 45.9 – 57.4 vs 30 – 32); a shorter female tail (c = 11.3 – 12.6 vs 7.8 – 10.3); shorter spicules (36 – 39 vs 52 – 54 μm); a prerectum starting anteriorly to the range of supplements (vs starting within the range of supplements) and more ventromedian supplements (12 – 15 vs 8 – 9). From C. sirgeli (Loof, 1975) Andrássy, 1986 it differs in having a slender body with a narrow lip region (a = 45.9 – 57.4 vs 26.8 – 36.4; lip region 8.5 – 9.0 vs 10.0 – 12.5 μm;); a vulva pre-equatorial (vs postequatorial, V = 43 – 46 vs 52 – 56); a longitudinal (vs pore-like); the absence of an advulval ornamentation (vs advulval ornamentation present); more ventromedian supplements (12 – 15 vs 6 – 9); a prerectum in males starting far beyond the range of supplements (vs prerectum starting within the range of supplements). In the presence of a longitudinal vulva, the new species comes close to C. beatus Andrássy, 2011 and C. signatus (Loof, 1975) Andrássy, 1986, but differs from the former in having a longer, slender body (1. 47 – 1.72 vs 1.28 – 1.30 mm; a = 45.9 – 57.4 vs 24 – 29), a narrow lip region (9.0 vs 14 – 15 μm), a shorter odontostyle (12 – 13 vs 15 – 16 μm), a longer tail (130 – 143 vs 60 – 68 μm; c = 11.3 – 12.3 vs 19 – 23; cʹ = 6.8 – 7.8 vs 2.2 – 2.4), the prerectum in males starting far beyond the range of supplements (vs prerectum starting at the level of anterior supplement) and shorter spicules (36 – 39 vs 48 – 55 μm). From the latter, it differs in having a slender body (a = 45.9 – 57.4 vs 25 – 33), a narrow lip region (9 vs 14 μm), a shorter odontostyle (12 – 13 vs 16 – 18 μm), a shorter odontophore (15 – 17 vs 19 – 23 μm), an anterior vulva position (V = 43 – 46 vs 49 – 56), a higher cʹ value (6.6 – 7.8 vs 2.9 – 4.2), shorter spicules (36 – 39 vs 72 μm), the prerectum in males starting far beyond the range of supplements (vs prerectum starting at level of anterior supplement). From Calcaridorylaimus andrassyi Ahmad & Shaheen, 2004, the new species differs by having a slender body (a = 45.9 – 57.4 vs 42 – 46) with a narrow lip region (lip region 9.0 vs 11.5 – 12.0 μm); a shorter odontostyle (12 – 13 vs 15 – 16 μm); a longitudinal vulva (vs pore-like); a slightly longer tail (c = 11.3 – 12.6 vs 14 – 16; cʹ = 6.6 – 7.8 vs 4.1 – 4.7); the shape and length of spicules (typical dorylaimoid, curved ventrad, 36 – 39 μm long vs massive, dorylaimoid, with triple contour, ventral arm smaller than dorsal arm, 52 – 57 μm long) and a higher number of ventromedian supplements (12 – 15 vs 10). It also differs from C. promissus Andrássy, 1986 in having a longer and slender body (L = 1.47 – 1.72 vs 1.28 – 1.37 mm; a = 45.9 – 57.4 vs 36 – 38); a longitudinal vulva (vs transverse); a comparatively smaller tail (118 – 143 vs 158 – 178 μm; c = 11.3 – 12.6 vs 7.7 – 8.4); shorter and differently shaped spicules (36 – 39 vs 50 – 53 μm) and the prerectum in males starting far beyond the range of supplements (vs prerectum starting within the range of supplements). The new species differs from all remaining species of the genus Calcaridorylaimus in having a slender body, a pre-equatorial vulva, shorter spicules, and the number of ventromedian supplements. This genus is reported for the first time from the Western Ghats and India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	description	urn: lsid: zoobank. org: act: 976683 CB- 24 AB- 4 DE 9 - B 183 - E 39 B 63747497 Figs 10 – 12, Table 5	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	diagnosis	Diagnosis Prodorylaimium humaimae sp. nov. is characterized by having a 0.97 – 1.29 mm (female) and 1.03 – 1.33 mm (male) long body, a truncate lip region, amalgamated lips, amphids fovea cup-shaped, a single guiding ring, an amphidelphic female genital system, a pre-equatorial, transverse vulva; males with 30 – 35 μm long dorylaimoid spicules, 6 – 8 (3, n = 1) almost equally spaced ventromedian supplements, a prerectum starting within the range of supplements. The tail is similar in both sexes; it is long filiform with a dorsally curved terminus.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	etymology	Etymology The new species is named after the daughter Humaima of the first author.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	materials_examined	Type material Holotype INDIA • ♀; Goa State, South Goa district, Mormugao, near Arossim beach; 15 ° 20 ′ 6.18 ″ N, 73 ° 53 ′ 38.58 ″ E; depth 5 – 10 cm; 23 Apr. 2016; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference number AMU / ZD / NC / Prodorylaimium humaimae / 1. Paratypes INDIA • 11 ♀♀, 5 ♂♂; same data as for holotype; slide reference numbers AMU / ZD / NC / Prodorylaimium humaimae / 2 – 10 • 2 ♀♀, 1 ♂; same data as for holotype; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Prodorylaimium humaimae / 11 – 12. Other material examined INDIA • 11 ♀♀, 5 ♂♂; Goa State, South Goa district, near Canacona bus stop; 15 ° 0 ′ 28.908 ″ N, 74 ° 2 ′ 40.488 ″ E; 5 – 10 cm depth; 18 Apr. 2016; soil samples collected from around roots of grasses (unidentified), AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Prodorylaimium humaimae / 13 – 15 • 4 ♀♀, 13 ♂♂; Maharashtra State, Satara district, about 100 meter distance from bank of Kaas Pond bridge; 17 ° 43 ′ 9.48 ″ N, 73 ° 48 ′ 52.092 ″ E; depth 5 – 10 cm; 13 Apr. 2016; soil collected from roots of grasses from dense forest; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Prodorylaimium humaimae / 16 – 18.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	description	Description Female Moderately slender nematodes of medium size, 0.97 – 1.29 mm long. Body cylindrical, curved ventrad upon fixation, tapering towards both extremities but more so towards posterior end leading to long filiform tail. Cuticle thin, 1.0 – 1.5 μm thick in anterior region, 1 – 2 μm at mid body and 2 – 3 μm thick on tail; outer layer with fine transverse striations. Lateral hypodermal chords occupying about 25 % of mid body diameter. Lateral, dorsal and ventral body pores indistinct. Lip region truncate, narrower than adjoining body, hardly offset by slight depression, 2.0 – 2.5 × as wide as high or about ⅓ – 2 / 5 of body diameter at neck base. Lips amalgamated, labial papillae not protruding above lip contour. Amphids cup-shaped, their aperture occupying about ½ of lip region diameter. Odontostyle dorylaimoid, slender, 1.0 – 1.3 × as long as lip region diameter, its aperture about ⅓ as long as its length. Odontophore simple, rod-like, 1.4 – 1.7 × as long as odontostyle. Guiding ring single, sclerotized in few specimens, at 0.7 – 0.9 × lip region diameter from anterior end. Nerve ring surrounding anterior slender part of pharynx at 41 – 47 % of neck length from anterior end. Pharynx consists of anterior slender part gradually expanding into wider, cylindrical posterior part, 4.2 – 6.3 × as long as wide or 2.3 – 3.0 × as long as corresponding body diameter, and occupying about 37 – 41 % of total neck length. Pharyngeal gland nuclei and their orifices located as follows: DO = 62 – 66; DN = 63 – 67; DO-DN = 2 – 3; S 1 N 1 = 74 – 76; S 1 N 2 = 77 – 79; S 2 N = 87 – 89; S 2 O = 88 – 90 (n = 11). Cardia short rounded to conoid, about ⅓ as long as corresponding body diameter, surrounded by intestinal tissue. Female genital system amphidelphic, measuring 110 – 212 µm (anterior branch) and 101 – 205 µm (posterior branch) long. Ovaries reflexed, measuring 23 – 35 µm (anterior) and 44 – 74 µm (posterior) long; oocytes arranged in single row except near tip. Oviduct joining ovary subterminally, measuring 40 – 105 µm or 1.2 – 3.7 (anterior) and 49 – 86 µm or 1.6 – 3.0 (posterior) × as long as corresponding body diameter. Oviduct-uterus junction marked by sphincter. Uterus simple, measuring 70 – 129 µm or 2.1 – 4.2 (anterior) and 45 – 86 µm or 1.6 – 2.7 (posterior) × as long as corresponding body diameter. Spindle-shaped sperms present in uterus. Vulva pre-equatorial, transverse. Vagina extending inwards, 16 – 19 µm or about ½ as long as of corresponding body diameter; pars distalis vaginae 3 – 4 µm long; pars refringens vaginae absent; pars proximalis vaginae 13 – 15 × 3.5 – 5.0 µm with slightly curved walls. Prerectum 2.0 – 3.1 and rectum 1.1 – 1.7 × as long as anal body diameter. Tail long filiform, dorsally curved near its tip; 5.0 – 7.2 × as long as anal body diameter. Tail hyaline portion about 8 – 12 % of tail length, with pair of caudal pores on each side. Male Slender nematodes of medium size, 1.03 – 1.33 mm long, similar to female in general morphology except for posterior region generally more curved because of presence of copulatory muscles. Genital system diorchic, testes opposed, sperms spindle-shaped, measuring 6 × 2 µm long. Spicules typical dorylaimoid, curved ventrad, relatively robust, 3.6 – 4.4 × as long as wide and 1.4 – 1.5 × as long as cloacal body diameter. Head well developed, 1.2 – 2.4 × as long as wide, occupying about 19 – 26 % (33 %, n = 1) of spicules total length, dorsal contour regularly convex, ventral contour bearing distinct hump at 10 – 13 µm from anterior end of spicule. Median piece 10.8 – 13.0 × as long as wide, occupying 23 – 25 % of spicules maximum width. Posterior end 3.5 – 4.0 µm wide. Lateral guiding pieces, 4.4 – 7.0 × as long as wide. In addition to adcloacal pair, situated at 7 – 9 μm from cloacal aperture, series of 6 – 8 (3, n = 1) almost regularly spaced ventromedian supplements located beyond spicular range, posterior ventromedian supplements located at 32 – 54 μm from adcloacal pair. Prerectum 3.5 – 4.3 × as long as cloacal body diameter, starting within range of supplements. Rectum 1.2 – 1.5 × as long as cloacal body diameter. Tail long filiform, dorsally curved near its tip; 4.5 – 5.8 × as long as anal body diameter. Two caudal pores present on each side of tail.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	biology_ecology	Type habitat and locality Soil samples collected from around the roots of grasses (unidentified) near Arossim beach, Mormugao, South Goa district, Goa, India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D46FF913827FEE05D9FFD0D.taxon	discussion	Remarks In the shape of the lip region and odontostyle length, the new species is most closely related to P. brigdammense (De Man, 1876) Andrássy, 1969 but differs in having a shorter neck (190 – 223 vs 300 – 350 μm); tail length and morphology (filiform tail with dorsally curved terminus, 99 – 136 μm vs long filiform tail, 250 – 270 μm); more c value (7.5 – 13.2 vs 4 – 6); less c’ value (5.0 – 7.2 vs 8 – 12) and shorter spicules (30 – 35 vs 40 – 46 μm). The new species also comes close to P. alpinum Andrássy, 1978 in having a small body size and smaller spicules but differs in having a narrow lip region (9.5 – 11 vs 13 μm); a shorter odontostyle (11.5 – 13.0 vs 14 – 17 μm), a smaller expanded part of pharynx (37 – 41 vs 46 – 47 % of neck length); a transverse vulva (vs longitudinal), 6 – 8 (3, n = 1) regularly spaced ventromedian supplements located far beyond the spicular range vs 8 – 10 supplements widely spaced, ending at level of head of spicules, as well as in tail length and morphology (tail filiform with dorsally curved terminus 99 – 136 μm vs long filiform tail 150 – 212 μm). The new species also comes close to P. baldum (Baniyamuddin & Ahmad, 2006) Andrássy, 2009 by having a transverse vulva but differs in having a shorter, robust body (0.97 – 1.29 vs 1.62 – 1.75 mm; a = 30.7 – 38.6 vs 57.0 – 58.5); a shorter odontostyle (11.5 – 13.0 vs 14.5 – 16.5 μm); a smaller expanded part of the pharynx (37 – 41 vs 53 – 56 % of neck length); a different tail length and morphology (tail filiform with dorsally curved terminus 99 – 136 μm vs tail long, filiform whip-like, 282 – 297 μm; c’ = 5.0 – 7.2 vs 16.0 – 16.8); and in having fewer ventromedian supplements (6 – 8 (3, n = 1) vs 9) and longer spicules (30 – 35 vs 28 μm). The new species also differs from P. goaense Ahmad & Jairajpuri, 1984, another species known from the Western Ghats region, in having a relatively shorter and robust body (0.97 – 1.29 vs 1.65 – 2.0 mm; a = 30.7 – 38.6 vs 44 – 55); a shorter odontostyle (11.5 – 13.0 vs 25 μm); a vulva transverse vs longitudinal and a shorter tail with dorsally curved terminus (99 – 136 vs 630 μm; c = 7.5 – 13.2 vs 3.1; c’ = 5.0 – 7.2 vs 26).	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D4DFF913B86FCD85FF3F85B.taxon	description	Fig. 13, Table 6	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D4DFF913B86FCD85FF3F85B.taxon	materials_examined	Material examined INDIA • 14 ♀♀, 4 ♂♂; Kerala State, Malappuram district, village Chungathara; 11 ° 20 ′ 1.1 ″ N, 76 ° 16 ′ 32.44 ″ E; depth 5 – 15 cm; 16 Nov. 2016; soil samples collected from grassland; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Kunjudorylaimus kunjui / 1 – 5.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D4DFF913B86FCD85FF3F85B.taxon	discussion	Remarks Dhanam & Jairajpuri (2000) described K. kunjui and K. srinii from soil around the roots of Cardamom (Elettaria cardamomum (L.) Maton) from Karnataka State, India. The present population widely overlaps with the description of the type populations of these species. In the original description, K. srinii resembles that of the type and only species of the genus K. kunjui in general morphology and typical body postures, but differes in having a smaller body, a smaller odontostyle, a smaller odontophore, a smaller female prerectum, shorter spicules and smaller number of ventromedian supplements. The morphology and morphometry of the present specimens overlaps with K. kunjui but differs in having a relatively shorter body (1.6 – 2.1 vs 2.0 – 2.3 mm); a shorter odontostyle (18 – 20 vs 20 – 22 µm long); a shorter odontophore (24 – 27 vs 32 – 34 µm long); a relatively shorter prerectum (40 – 76 vs 73 – 115 µm long); shorter spicules (29 – 32 vs 32 – 37 µm long) and fewer ventromedian supplements (8 – 11 vs 11 – 13). The record of the present specimens, which in most of the morphometric data are intermediate between the two species (see Table 6 for comparative morphometrics of the two species) puts a doubt on the identity of K. srinii. K. kunjui, K. srinii, and the present population exhibits a slight overlap in their morphometrics. The odontostyle length (20 – 22 vs 18 – 20 µm), ventromedian supplements (11 – 13 vs 8 – 11), and spicule length (32 – 37 vs 29 – 32 µm) in K. kunjui and the present population overlap; however, the length of the odontophore (24 – 25 vs 24 – 27 µm), the number of ventromedian supplements (8 – 10 vs 8 – 11) and spicule length (29 – 31 vs 29 – 32 µm) overlap in K. srinii and the present population. Due to overlapping morphometry and similar morphology of K. kunjui, K. srinii and the present population, it might be possible that the two species are conspecific and hence the present population is regarded as K. kunji, and K. srinii is considered a synonym of the type species.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D70FFA83B18FEE05E01FC8E.taxon	description	Fig. 14, Table 7	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D70FFA83B18FEE05E01FC8E.taxon	materials_examined	Material examined INDIA • 7 ♀♀; Maharashtra State, Raigad district, Borli, near bus-stand; 18 ° 51 ʹ 12.8 ʺ N, 72 ° 91 ʹ 25.7 ʺ E; depth 5 – 10 cm; 11 Apr. 2016; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema mauritianum / 1 – 3 • 5 ♀♀; Goa State, South Goa district, Madgoa, forest near Balli; 15 ° 15 ʹ 61.3 ʺ N, 74 ° 01 ʹ 62.1 ʺ E; depth 10 – 15 cm; 19 Apr. 2016; soil samples collected from around roots of plants (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema mauritianum / 4 – 5 • 3 ♀♀; Kerala State, Thrissur district, Konnakuzhy, Thumboormuzhi Garden near Chalakkudy river; 10 ° 30 ʹ 1 ʺN, 76 ° 45 ʹ 1 ʺE; depth 5 – 10 cm; 27 Oct. 2017; soil samples collected from around roots of grasses and shrubs (unidentified); AMU / ZD / NC, slide reference number AMU / ZD / NC / Thornenema mauritianum / 6 • 5 ♀♀; Karnataka State, Chikmagalur district, Hosahalli, near Kaimara town; 13 ° 22 ʹ 38.4 ʺ N, 75 ° 44 ʹ 55.6 ʺ E; depth 5 – 10 cm; 24 Oct. 2018; soil samples collected from grass field (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema mauritianum / 7 – 8 • 6 ♀♀; Karnataka State, Uttara Kannada district, Sirsi, forest of Gudnapur; 14 ° 37 ʹ 14.59 ʺ N, 74 ° 50 ʹ 7.94 ʺ E; depth 5 – 10 cm; 28 Oct. 2018; soil samples collected from grass field (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema mauritianum / 9 – 10 • 5 ♀♀; Karnataka State, Uttara Kannada district, Yellapur, Manchikeri; 14 ° 85 ʹ 39.8 ʺ N, 74 ° 81 ʹ 61.6 ʺ E; depth 5 – 10 cm; 19 Oct. 2018; soil samples collected from small grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema mauritianum / 11 – 12.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D70FFA83B18FEE05E01FC8E.taxon	description	Description Male Unknown.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D70FFA83B18FEE05E01FC8E.taxon	discussion	Remarks Baqri & Jairajpuri (1967) while studying species of Thornenema from India, transferred Chrysonema mauritiana Williams, 1959 to Thornenema and also synonymized T. viriosum Williams, 1964; T. filiforme Siddiqi, 1965; T. delhiense Prasad & Chawla, 1965 and T. africanum Andrássy, 1965 with this species. T. mauritianum (Williams, 1959) Baqri & Jairajpuri, 1967 has a world-wide distribution and is reported from Mauritius (Williams, 1959), Ghana (Andrássy, 1965), Malaysia (Baqri & Jairajpuri, 1967; Sauer, 1981), Costa Rica (Loof & Coomans, 1970), Russia (Eliava et al., 1975) and Australia (Sauer, 1981). Carbonell & Coomans (1986) in their reviews of the genus Thornenema made a detailed study of this species based on specimens collected from Cameroon, Brazil, India, Fiji Islands, Sudan, Iraq, Nigeria, and South Africa. Thornenema mauritianum is the most widely distributed species of Thornenema in India, with records from Aligarh, Madras and Thane (Siddiqi, 1965); Delhi (Prasad & Chawla, 1965); Aligarh, Mathura, Kurnool, Andamans, Aurangabad (Baqri & Jairajpuri, 1967); Osmanabad (Ali et al., 1971) and Goa, Karnataka and Kerala (Ahmad & Ahmad, 2003). The present specimens from the Western Ghats fit well with the description provided by earlier authors, except that the population of Chikmagalur slightly differs from Prasad & Chawla (1965) and Ahmad & Ahmad (2003) populations. From former it differs by having a slightly smaller body (1.43 – 1.53 vs 1.63 – 2.01 mm) while from latter (Goa and Kerala population) it differs in having a slightly smaller odontostyle (11.0 – 12.5 vs 13 – 15 µm). The population of Goa also differs from the description of Prasad & Chawla (1965) by having a slightly smaller body (1.31 – 1.51 vs 1.63 – 2.01 mm). The present six populations of the Western Ghats conform well with each other except for the population of Maharashtra which slightly differs by having a comparatively wider lip region and longer odontophore, which may be considered as minor intraspecific variations.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D74FFA83B08FC205FB1F84B.taxon	description	Fig. 15, Table 8	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D74FFA83B08FC205FB1F84B.taxon	materials_examined	Material examined INDIA • 4 ♀♀; Karnataka State, Shivamoga district, Mattur; 13 ° 52 ʹ 26 ʺ N, 75 ° 33 ʹ 32 ʺ E; depth 5 – 15 cm; 26 Oct. 2018; soil samples collected from around roots of grasses of areca nut field; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema paraconurum / 1 – 2.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D74FFA83B08FC205FB1F84B.taxon	description	Description Male Unknown.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D74FFA83B08FC205FB1F84B.taxon	discussion	Remarks Heyns (1963) described this species as Dorylaimoides paraconurus from South Africa. Later, Goseco et al. (1976) transferred it to the genus Thornenema. Carbonell & Coomans (1986) restudied the type specimens and three other populations from South Africa. The present population conforms well with type population except for having a slightly longer odontostyle (14.5 – 15.0 vs 12.5 – 14.0 µm) and odontophore (18 – 19 vs 16 – 17 µm) and a smaller tail (97 – 145 vs 148.5 – 154 μm; c = 10.3 – 16.5 vs 9.3 – 10.0). All the three populations described by Carbonell & Coomans (1986) from South Africa have a much longer tail compared to the type population, (Louisvale population 204.5 – 247 µm; the population of Bethal 211.5 – 273.0 µm; and the population of Ladysmith 229 – 235 µm). Since there was no other significant difference from the type population, they considered all the three populations conspecific with the type. This species is reported for the first time from India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	description	urn: lsid: zoobank. org: act: A 2 FAE 3 BC-F 337 - 4 A 72 - 9810 - 19 C 6521 A 6 B 76 Figs 16 – 17, Table 8	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	diagnosis	Diagnosis Thornenema pseudodidelphis sp. nov. is characterized by having a 1.2 – 1.6 mm long body; lip region narrow, truncate, slightly depressed to continuous with body contour; labial and postlabial sclerotization distinct; amphids fovea cup-shaped; guiding ring single; female genital system pseudo-didelphic with anterior branch reduced having degenerate ovary; vulva transverse, pars refringens vaginae absent; tail long filiform, 8.5 – 14.1 × as long as anal body diameter.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	etymology	Etymology The specific epithet refers to the pseudo-didelphic female genital system, with an anterior branch occasionally complete with reduced ovary but non-functional and posterior branch well-developed and functional.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	materials_examined	Type material Holotype INDIA • ♀; Kerala State, Kasargod district, Ranipuram National Park; 12 ° 42 ʹ 50.8 ʺ N, 75 ° 34 ʹ 63.4 ʺ E; depth 10 – 15 cm; 7 Nov. 2016; soil samples collected from around roots of unidentified plants from forest; AMU / ZD / NC, slide reference number AMU / ZD / NC / Thornenema pseudodidelphis / 1. Paratypes INDIA • 4 ♀♀; same data as for holotype; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema pseudodidelphis / 2 – 3. Other material examined INDIA • 14 ♀♀; Tamil Nadu State, Nilgiri district, Mudumalai National Park; 11 ° 34 ′ 53.2884 ″ N, 76 ° 34 ′ 58.908 ″ E; depth 5 – 10 cm; 14 Nov. 2016; soil samples collected from around roots of grass field; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Thornenema pseudodidelphis / 4 – 6 • 2 ♀♀; same data as for preceding; ZSIC, slide reference number AMU / ZD / NC / Thornenema pseudodidelphis / 7.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	description	Description Female Body cylindroid, 1.22 – 1.59 mm long, curved ventrally, tapering towards both extremities. Cuticle finely striated, thickness varies between 1.0 – 1.5 µm in anterior region, 1.5 – 2.0 µm at mid body and 2.0 – 3.5 µm on tail. Lateral chords about 19 – 25 % of the mid body diameter. Lateral, dorsal and ventral body pores indistinct. Lip region narrow, truncate, amalgamated, slightly depressed to continuous with body contour, 1.7 – 2.2 × as wide as high or about ¼ as wide as body diameter at neck base. Labial and postlabial sclerotization present. Amphids cyathiform, their aperture about 3 / 5 of lip region diameter. Odontostyle cylindroid, 1.4 – 1.8 × as long as lip region diameter, its aperture about ¼ – ⅓ of its length. Odontophore simple rod-like, 1.4 – 1.8 × as long as odontostyle. Guiding ring single, at 0.9 – 1.1 × as long as lip region diameter from anterior end. Nerve ring encircling anterior slender part of pharynx at 40 – 47 % of neck length from anterior end. Pharynx consists of anterior slender part and posterior expanded part occupying about 40 – 44 % of total neck length. Pharyngeal gland nuclei and their orifices are located as follows: DO = 58 – 62; DN = 60 – 63; DO-DN = 0.8 – 1.9; S 1 N 1 = 66 – 73; S 1 N 2 = 73 – 76; S 2 N = 82 – 86; S 2 O = 83 – 87 (n = 7). Cardia conoid, about one-half of the corresponding body diameter long. Female genital system pseudo-didelphic; anterior branch reduced, measuring 71 – 75 µm long, comprising narrow tubular uterus 35 – 36 µm long with slightly enlarged proximal part joining sphincter; oviduct measuring 35 – 40 µm long, and small, nonfunctional, and degenerate ovary measuring 20 – 24 µm (n = 2). Posterior genital branch well developed, measuring 105 – 167 µm long, comprising tubular uterus measuring 45 – 72 µm or 1.3 – 2.0 × as long as corresponding body diameter. No traces of sperms in uterus. Oviduct joining ovary subterminally, measuring 54 – 99 µm or 1.5 – 2.5 × as long as corresponding body diameter. Sphincter prominent at oviduct-uterus junction. Ovaries reflexed, measuring 61 – 97 µm long, oocytes arranged in single row except near tip. Vulva transverse, pre-equatorial. Vagina slightly thickened, extending inwards, 18.5 – 23.0 µm or about ½ of mid body diameter; pars distalis vaginae 5.5 – 6.5 µm long; pars refringens vaginae absent; pars proximalis vaginae measuring 13.0 – 14.5 × 4.0 – 5.5 µm with slightly curved walls. Prerectum 1.1 – 2.6 and rectum 1.0 – 1.6 × as long as anal body diameter. Tail long, filiform, 8.5 – 14.1 × as long as anal body diameter with finely rounded terminus. Two to three pairs of caudal pores present on each side of tail. Male Unknown.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	biology_ecology	Type habitat and locality Soil samples collected from around the roots of unidentified plants from forest vegetation of Ranipuram National Park, Ranipuram, Kasargod district, Kerala, India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D77FFA63850FE855D71FB7A.taxon	discussion	Taxonomic remarks In the presence of a pseudo-didelphic female genital system, the new species comes close to T. pseudosartum Carbonell & Coomans, 1986, the only species in the genus Thornenema with such a well-developed female anterior genital branch. However, it differs from it in having a smaller body size (1.22 – 1.59 vs 1.79 – 1.93 mm); smaller anterior genital branch (71 – 75 vs 237 – 258 μm long); longer tail (187 – 281 vs 148 – 184 μm; c = 5.2 – 7.0 vs 10.1 – 12.1 and c’ = 8.5 – 14.1 vs 4.8 – 5.7) and absence of male (vs present).	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7AFFA23B32FA8E594EFB3A.taxon	description	Figs 18 – 19, Table 9	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7AFFA23B32FA8E594EFB3A.taxon	materials_examined	Material examined INDIA • 4 ♀♀; Kerala State, Palakkad district, Mukkali forest; 11 ° 3 ′ 40.6944 ″ N, 76 ° 32 ′ 23.8236 ″ E; depth 5 – 10 cm; 25 Oct. 2017; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Opisthodorylaimus cavalcantii / 1 – 2 • 5 ♀♀; Karnataka State, Chikmagalur district, Lakya road, hills near Kalavara Resort; 11 ° 3 ′ 40.6944 ″ N, 76 ° 32 ′ 23.8236 ″ E; depth 5 – 10 cm; 24 Oct. 2018; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Opisthodorylaimus cavalcantii / 3 – 4 • 5 ♀♀; Karnataka State, Chikmagalur district, near Kaimara town, Hosahalli village; 13 ° 22 ʹ 38.4 ʺ N, 75 ° 44 ʹ 55.6 ʺ E; depth 5 – 10 cm; 24 Oct. 2018; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Opisthodorylaimus cavalcantii / 5 – 6 • 5 ♀♀; Karnataka State, Shivamogga district, Dummalli village; 13 ° 50 ʹ 31.4 ʺ N, 75 ° 35 ʹ 58.9 ʺ E; depth 5 – 10 cm; 26 Oct. 2018; soil samples collected from around roots of large grasses (unidentified) near paddy field; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Opisthodorylaimus cavalcantii / 7 – 8 • 3 ♀♀; Karnataka State, Shivamogga district, Mattur village; 13 ° 52 ʹ 26 ʺ N, 75 ° 33 ʹ 32 ʺ E; depth 5 – 10 cm; 26 Oct. 2018; soil samples collected from around roots of grasses (unidentified) from areca nut field; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Opisthodorylaimus cavalcantii / 9 – 10.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7AFFA23B32FA8E594EFB3A.taxon	discussion	Remarks Opisthodorylaimus cavalcantii is one of the most widely distributed nematode species of the genus, so far reported from every continent except Europe. This species has been observed in 18 countries. Carbonell & Coomans (1985) made a detailed study of this species based on 14 populations obtained from Kenya, Belmonte (Bahia State, Brazil), Cameroon, Ivory Coast, South Africa, USA, Zaire and observed intraspecific variations especially in the female reproductive system which is monoopisthodelphic with variable length of anterior genital branch, very rarely even didelphic. However, in didelphic females the anterior genital branch is non-functional and reduced in size compared to a normal and functional posterior genital branch. During the present study, this species was recorded from five different locations in the Western Ghats. The present specimens fit well with those described by Carbonell & Coomans (1985), Khan & Araki (2002), and Baniyamuddin & Ahmad (2006). However, the population of Kerala differs from Andrássy’s (2007) description in having a wider lip region (11 vs 8 – 9 µm), a posterior vulva position (46 – 47 vs 41 – 43 %) and a slightly smaller tail (67 – 97 vs 98 – 104 µm). The population of Chikmagalur (Hosahalli) differs from the population of Kerala in the anterior vulva position (42 – 45 vs 46 – 47 %), a longer cardia (11.5 – 14.0 vs 7 – 8 µm) and a longer tail (113 – 121 vs 67 – 97 µm). These differences may be regarded as intraspecific variations. This species is reported here for the first time from the Western Ghats of India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7EFFBC385BFAC958D6F92C.taxon	description	Fig. 20, Table 10	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7EFFBC385BFAC958D6F92C.taxon	materials_examined	Material examined INDIA • 3 ♀♀; 2 ♂♂; Goa State, South Goa district, Xelvona village in Curchorem town; 15 ° 15 ′ 28.44 ″ N, 74 ° 6 ′ 37.692 ″ E; depth 10 – 15 cm; 16 Apr. 2016; soil samples collected from around roots of paddy crop; slide reference numbers AMU / ZD / NC / Coomansinema oryzae / 1 – 2; AMU / ZD / NC.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D7EFFBC385BFAC958D6F92C.taxon	discussion	Remarks Ahmad (1993) described Coomansinema oryzae from soil around the roots of paddy field of Assam, India. Later, Andrássy (2012) reported this species from a moss-rain forest of Ecuador. Andrássy’s population differs from the original population in the width of the lip region (14 – 15 vs 15 – 17 μm). The present specimens conform well with the type populations except for having a comparatively longer odontostyle (22.0 – 23.5 vs 20 – 21 µm) and a slightly longer tail (101 – 122 vs 97 – 114 µm). It also fits well with the population of Ecuador except for having a comparatively longer odontostyle (22.0 – 23.5 vs 20 – 21 µm). This species is reported here for the first time from the Western Ghats of India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	description	urn: lsid: zoobank. org: act: FAA 54266 - C 42 A- 4 CB 1 - B 606 - 52 DCA 905 B 3 EC Figs 21 – 22, Table 11	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	diagnosis	Diagnosis Prothornenema cuticulare sp. nov is characterized by having a 0.93 mm (female) and 0.93 – 0.98 mm (male) long body; a cap-like lip region, offset by constriction with moderate labial and postlabial sclerotization; amphids stirrup-shaped; a guiding ring single; an odontostyle 10 – 11 μm long; an expanded part of the pharynx occupying about 40 % of the total neck length; an amphidelphic female genital system; a transverse vulva with deep cuticle invagination anterior and posterior to it, pars refringens vaginae present; an elongate tail, 4.6 × as long as the anal body diameter. Males with slender spicules, 31 – 32 μm long; 17 contiguous ventromedian supplements; the prerectum starting at or within the range of ventromedian supplements and tail short conoid with broadly rounded terminus.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	etymology	Etymology The new specific epithet refers to the cuticular infolding near vulva of the species.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	materials_examined	Type material Holotype INDIA • ♀; Maharashtra State, Sangli district, near Sahyadri Tiger reserve; 17 ° 48 ′ 59.8 ″ N, 73 ° 80 ′ 88.6 ″ E; depth 5 – 10 cm; 14 Apr. 2016; soil samples collected from around roots of unidentified grasses; AMU / ZD / NC, slide reference number AMU / ZD / NC / Prothornenema cuticulare / 1. Paratypes INDIA • 3 ♂♂; same data as for holotype; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Prothornenema cuticulare / 2 – 3.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	description	Description Female Body slightly ventrally curved upon fixation, tapering towards both ends. Cuticle thin with fine transverse striations, 1.0 µm thick in anterior region, 1.5 µm at mid body and 3.0 µm on tail. Lateral chords occupying about ⅓ of mid body diameter. Lateral, dorsal and ventral body pores indistinct. Lip region cap-like, offset from body by constriction with moderate labial and postlabial sclerotization, about 2.6 × as wide as high or about ⅓ as wide as body diameter at neck base. Amphids stirrup-shaped, their apertures occupying about ½ of lip region diameter. Odontostyle dorylaimoid, 1.2 × as long as the lip region diameter, its aperture about 2 / 5 of its length. Odontophore simple, rod-like, 1.4 × as long as odontostyle. Guiding ring single, at about lip region diameter from anterior end. Nerve ring surrounding the anterior slender part of pharynx at 44 % of neck length from anterior end. Pharynx consisting of slender anterior part, expanding gradually; expanded part occupying about 40 % of total neck length. Pharyngeal gland nuclei and their orifices are located as follows: DO = 68; DN = 68.6; DO-DN = 0.5; S 1 N 1 = 76; S 1 N 2 = 82; S 2 N = 91; S 2 O = 92. Cardia long, conoid to rounded, about 3 / 5 as long as corresponding body diameter. Female genital system amphidelphic, ovary reflexed, measuring 37 µm (anterior) and 54 µm (posterior) long; oocytes arranged in single row except near tip. Oviduct joining ovary subterminally, measuring 61 µm (anterior) and 100 µm (posterior). Sphincter distinct at oviduct-uterus junction. Uterus apparently bipartite, measuring 71 µm (anterior) and 75 µm (posterior), with two sections of nearly same length, distal part more strongly muscular. Vulva transverse, with two cuticular invaginations anterior and three posterior of it. Vagina extending inwards, 16.5 µm or about ½ of mid body diameter; pars distalis vaginae 2.5 µm long; pars refringes vaginae with two divergent, well separated triangular sclerotizations, each measuring 2.5 × 2.0 µm and with combined width 6 µm; pars proximalis vaginae 11 × 7.5 µm with curved walls. Prerectum 2.5 and rectum 1.5 × as long as anal body diameter. Tail elongate, 4.6 × as long as anal body diameter. Two caudal pores on each side. Male General morphology similar to female except for posterior region generally more curved because of presence of copulatory muscles. Body slender, 0.93 – 0.98 mm long. Genital system diorchic, testes opposed filled with spindle-shaped sperm, measuring 5.0 × 1.5 µm long. Spicules typical dorylaimoid, curved ventrad, 4.9 – 5.4 × as long as wide and 1.4 – 1.6 × as long as cloacal body diameter. Head well developed, occupying 22 – 25 % of the spicules total length, dorsal contour regularly convex, ventral contour bearing moderately distinct hump at 11 – 13 µm from anterior end of spicule. Median piece 8.0 – 8.5 × as long as wide, occupying about 28 % of spicules maximum width. Posterior end of spicule 3.5 – 4.0 µm wide. Lateral guiding pieces 3 × as long as wide. In addition to ad-cloacal pair, situated at 3.5 – 4.0 μm from cloacal aperture, series of 17 ventromedian supplement, almost 5 µm equally spaced, located outside range of spicules, posterior ventromedian supplement located at 41.5 – 42.0 μm from ad-cloacal pair. Prerectum 4.8 – 6.2 × as long as cloacal body diameter, starting at or within range of ventromedian supplements. Rectum 1.6 – 1.8 × as long as cloacal body diameter. Tail short conoid with broadly rounded terminus, 0.9 – 1.0 × as long as cloacal body diameter with two caudal pores on each side of tail.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	biology_ecology	Type habitat and locality Soil samples collected from around the roots of unidentified grasses near Sahyadri Tiger reserve, Sangli district, Maharashtra, India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D61FFB8382FFEC75949F985.taxon	discussion	Remarks In the presence of cuticular infoldings near vulva, this new species is most closely related to P. vulvatum Baniyamuddin & Ahmad, 2011, but differs in having a smaller body (0.93 – 0.98 vs 1.06 – 1.07 mm); the nature of pars refringens vaginae (two triangular pieces vs additional well developed median triangular piece present between the two triangular vulval sclerotized pieces); a longer expanded part of pharynx (40 vs 28 – 29 %); tail length and morphology (elongate, 85 µm vs long filiform tail 119 – 128 µm long); smaller spicules (31 – 32 vs 38 – 40 μm) and more ventromedian supplements (17 vs 13 – 14). This species also differs from P. capitatum Baqri & Bohra, 2003 in having a relatively smaller body size (L = 0.93 vs 1.03 – 1.34 mm); a lower b value (4.8 vs 5.7 – 5.8); a wider lip region (9 vs 7 µm); a longer expanded part of pharynx (40 vs 32 – 34 %); a cuticle infolding present anterior and posterior to vulva vs absent and slightly longer spicules (31 – 32 vs 30 µm). From P. longicaudatum sp. nov., the new species differs in having a relatively shorter, robust body (L = 0.93 vs 1.05 – 1.22 mm; a = 30.1 vs 35.9 – 37.6; b = 4.8 vs 5.5 – 5.9 μm); a cuticle infolding present anterior and posterior to vulva vs absent; a smaller tail (85 vs 168 – 202 µm; c = 11 vs 5.5 – 7.2; c’ = 4.6 vs 8.9 – 11.9) and more ventromedian supplements (17 vs 13 – 14).	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	description	urn: lsid: zoobank. org: act: A 2 C 52328 - EB 60 - 4 F 69 - AC 74 - 97579 ED 372 D 2 Figs 23 – 25; Table 11	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	diagnosis	Diagnosis Prothornenema longicaudatum sp. nov. is characterized by having a 1.05 – 1.22 mm (female) and a 0.88 – 0.98 mm (male) long body; lip region cap-like, offset by constriction with moderate labial and postlabial sclerotization; amphids stirrup-shaped; guiding ring single; odontostyle 10.0 – 11.5 μm long; pharyngeal expansion 33 – 36 % of total neck length; female genital system amphidelphic; vulva transverse, pars refringens vaginae present; female tail long filiform, 8.9 – 11.9 × as long as anal body diameter. Males with slender spicules, 30 – 32 μm long; 13 – 14 contiguous ventromedian supplements, prerectum starting within the range of ventromedian supplements and tail short conoid with broadly rounded terminus.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	etymology	Etymology The specific epithet refers to the long tail of the specimens.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	materials_examined	Type material Holotype INDIA • ♀; Maharashtra State, Raigad district, Borli, near bus-stand; 18 ° 51 ʹ 12.8 ʺ N, 72 ° 91 ʹ 25.7 ʺ E; depth 5 – 10 cm; 11 Apr. 2016; soil samples collected from around roots of grasses (unidentified); AMU / ZD / NC, slide reference number AMU / ZD / NC / Prothornenema longicaudatum / 1. Paratypes INDIA • 6 ♀♀, 5 ♂♂; same data as for holotype; slide reference numbers AMU / ZD / NC / Prothornenema longicaudatum / 2 – 4 • 1 ♀, 1 ♂; same data as for holotype; AMU / ZD / NC, slide reference number AMU / ZD / NC / Prothornenema longicaudatum / 5.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	description	Description Female Body slightly curved ventrad upon fixation, tapering slightly anterior to the pharynx base, posteriorly ending in a long filiform tail. Cuticle thin with fine transverse striations, 1.0 – 1.5 µm thick in anterior region, 1.0 – 1.5 µm at mid body and 2.5 – 3.0 µm on tail. Lateral chords about ⅓ of mid body diameter. Lateral, dorsal and ventral body pores indistinct. Lip region cap-like, set off from body by constriction, with moderate labial and postlabial sclerotization, about 2.0 – 2.3 × as wide as high or about ¼ × as wide as body diameter at neck base. Amphids stirrup-shaped, their aperture occupying about 3 / 5 of lip region diameter. Odontostyle dorylaimoid, 1.4 – 1.6 × as long as the lip region diameter, its aperture about 2 / 5 of its length. Odontophore simple, rod-like, 1.3 – 1.7 × as long as odontostyle. Guiding ring single, fixed ring at about 1.0 – 1.1 × lip region diameter from anterior end. Nerve ring surrounding anterior slender part of pharynx at 43 – 47 % of neck length from anterior end. Pharynx consists of slender anterior part, expanding gradually into small posterior part; expanded portion occupying about 33 – 36 % of total neck length. Pharyngeal gland nuclei and their orifices are located as follows: DO = 69 – 72; DN = 70 – 73; DO-DN = 2 – 3; S 1 N 1 = 78 – 83; S 1 N 2 = 82 – 84; S 2 N = 90 – 91; S 2 O = 90 – 92. Cardia long conoid to rounded, about ¼ as long as corresponding body diameter. Female genital system amphidelphic, measuring 163 – 189 µm (anterior) and 125 – 155 µm (posterior) long. Ovaries reflexed, measuring 58 – 86 µm (anterior) and 59 – 80 µm (posterior) long; oocytes arranged in single row except near tip. Oviduct joining ovary subterminally, measuring 87 – 109 µm or 2.8 – 3.5 (anterior) and 66 – 113 µm or 2.1 – 3.3 (posterior) × as long as corresponding body diameter. Sphincter distinct at oviduct-uterus junction. Uterus wide tube, measuring 56 – 91 µm or 2.0 – 2.7 (anterior) and 49 – 62 µm or 1.7 – 1.9 (posterior) × as long as corresponding body diameter. Vulva pre-equatorial, transverse slit. Vagina extending inwards, 16.0 – 17.5 µm or about ½ of mid body diameter; pars distalis vaginae 1.5 – 2.0 µm long; pars refringes vaginae with two divergent, well separated triangular sclerotizations, each measuring 4 – 5 × 3.0 – 3.5 µm and with combined width 6.0 – 7.5 µm; pars proximalis vaginae 10.0 – 11.5 × 4 – 5 µm long with curved walls. Prerectum 2.4 – 3.8 and rectum 1.5 – 1.9 × as long as anal body diameter. Tail long filiform, 8.9 – 11.9 × as long as anal body diameter. Two caudal pores present on each side. Male General morphology similar to female except for posterior region generally more curved because of the presence of copulatory muscles. Body slender, 0.88 – 0.98 mm long. Genital system diorchic, testes opposed filled with spindle-shaped sperms, measuring 3 – 4 × 1.0 – 1.5 µm. Spicules typical dorylaimoid, curved ventrad, 4.8 – 6.4 × as long as wide and 1.6 – 1.7 × as long as cloacal body diameter. Head well developed, occupying 10 – 11 % of spicules total length, dorsal contour regularly convex, ventral contour bearing a moderately distinct hump at 29 – 34 % from anterior end of spicule. Median piece 13 – 14 × as long as wide, occupying about ⅓ – 2 / 5 of spicules maximum width. Posterior end of spicule 3.5 – 4.5 µm wide. Lateral guiding pieces 4 – 5 × as long as wide. In addition to ad-cloacal pair, situated at 4.0 μm from cloacal aperture, series of 13 – 14 ventromedian supplements, almost 5 – 6 µm equally spaced, located outside range of spicules, posterior ventromedian supplement located at 39 – 42 μm from adcloacal pair. Prerectum 3.9 – 4.2 × as long as cloacal body diameter, starting within range of ventromedian supplements. Rectum 1.7 – 1.9 × as long as cloacal body diameter. Tail short conoid with broadly rounded terminus, two caudal pores present on each side of tail.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	biology_ecology	Type habitat and locality Soil samples collected from around the roots of grasses (unidentified) near bus-stand of Borli, Raigad district, Maharashtra State, India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D64FFB7384DF92F5E88FBB8.taxon	discussion	Remarks The new species differs from P. capitatum Baqri & Bohra, 2003 in having a comparatively slender body (a = 36 – 38 vs 28 – 32); a comparatively anterior vulva (V = 39.9 – 45.9 vs 46 – 47); a much longer tail (168 – 202 vs 70 – 120 µm; c = 5.5 – 7.2 vs 9.1 – 14.6; c’ = 8.9 – 11.9 vs 3.7 – 6.3) and fewer ventromedian supplements (13 – 14 vs 15 – 17). From P. vulvatum Baniyamuddin & Ahmad, 2011, the new species primarily differs in the absence of a cuticular infolding near vulval opening. Furthermore, it differs in having a comparatively slender body (a = 36 – 38 vs 31 – 33); a longer expanded part of pharynx (33 – 36 vs 28 – 29 %); a longer tail (168 – 202 vs 119 – 128 μm; c = 5.5 – 7.2 vs 8.5 – 9.5; c’ = 8.9 – 11.9 vs 6.5 – 7.5) and smaller spicules (30 – 32 vs 38 – 40 μm).	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D6BFFB33B9AFB71589EFC42.taxon	description	Fig. 26, Table 12	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D6BFFB33B9AFB71589EFC42.taxon	materials_examined	Material examined INDIA • 8 ♀♀; Kerala State, Palakkad district, Mukkali forest area; 11 ° 3 ′ 28.55 ″ N 76 ° 32 ′ 19.17 ″ E; depth 10 – 15 cm; 25 Oct. 2017; soil samples collected from around roots of mixed shrubs (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Amphidorylaimus flagellicauda / 1 – 3 • 2 ♀♀; Kerala State, Thiruvananthapuram district, Palai village, Ponmudi hills; 8 ° 44 ′ 56.4 ″ N, 77 ° 737.2 ″ E; depth 5 – 15 cm; 4 Nov. 2017; soil samples collected from around roots of grasses and tea plants; AMU / ZD / NC, slide reference number AMU / ZD / NC / Amphidorylaimus flagellicauda / 4 • 4 ♀♀; Karnataka State, Chickmagalur district, Kalavara Resort, from hills near Chickmagalur Lakya Road; 13 ° 21 ′ 26.3 ″ N, 75 ° 51 ′ 05.9 ″ E; depth 5 – 15 cm; 26 Oct. 2018; soil samples collected from mixed grasses and shrubs (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Amphidorylaimus flagellicauda / 5 – 6 • 5 ♀♀; Karnataka State, Shivamogga district, Kalavara Resort, Kaspadi, forest; 14 ° 12 ′ 33.75 ″ N, 75 ° 05 ′ 66.03 ″ E; depth 5 – 15 cm; 27 Oct. 2018; soil samples collected from mixed grasses and small plants (unidentified); AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Amphidorylaimus flagellicauda / 7 – 8 • 5 ♀♀; Karnataka State, Uttara Kannada district, Sirsi, Kappe; 14 ° 34 ′ 31.8144 ″ N, 74 ° 54 ′ 49.3092 ″ E; depth 5 – 15 cm; 28 Oct. 2018; soil samples collected from mixed grasses of forest; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Amphidorylaimus flagellicauda / 9 – 10 • 3 ♀♀; Maharashtra State, Satara district, Sirsi, Kappe, dense forest near Kaas pond; 17 ° 71 ′ 67.7 ″ N, 73 ° 80 ′ 80.3 ″ E; depth 10 – 15 cm; 13 Apr. 2016; soil samples collected from around roots of Ficus benjamina; AMU / ZD / NC, slide reference numbers AMU / ZD / NC / Amphidorylaimus flagellicauda / 11 – 12.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
03A5D94A7D6BFFB33B9AFB71589EFC42.taxon	discussion	Remarks Monteiro (1970) described Amphidorylaimus flagellicauda based on three females, from Brazil only. Ahmad & Jairajpuri (1982 a) redescribed this species with the first report of its male from the population of Bangalore, India. The population of Bangalore differs from the original description by having a slightly longer body and a slightly posterior vulva position. Later, Baniyamuddin & Ahmad (2006) redescribed this species from Arunachal Pradesh, India. The present specimens from Palakkad conform well with original description, whereas the remaining specimens collected from Kerala, Karnataka and Maharashtra differ from the original description in having a slightly longer body (vs 0.79 – 0.82 mm) and a narrow lip region (vs 11 µm). The specimens from Shivamogga and Uttara Kannada agree well with all the previously described populations and remaining populations of the Western Ghats from the present study except for having a longer female tail. These minor differences may be attributed to intraspecific variations. This species is reported for the first time from the Western Ghats of India.	en	Khan, Shahnaz, Imran, Zarrin, Tauheed, Uzma, Ahmad, Wasim (2026): New and known species of the family Dorylaimidae Thorne, 1936 (Nematoda: Dorylaimoidea) from the Western Ghats of India. European Journal of Taxonomy 1040: 1-71, DOI: 10.5852/ejt.2026.1040.3191, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3191/14169
