taxonID	type	description	language	source
1513B739F10D4B34FD9D9B10B5FFF86B.taxon	type_taxon	Type species Bathytropa thermophila Dollfus, 1896 = Trichorhina tomentosa (Budde-Lund, 1893).	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	description	urn: lsid: zoobank. org: act: E 2929747 - 360 E- 4839 - BCBF- 23 C 5 D 53351 CE Figs 1 – 6	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	diagnosis	Diagnosis Body elongated. Colour light orange-brown to whitish. Dorsal integument without granulation, with large fan-shaped scale-setae of different sizes arranged in longitudinal lines on pereon. Cephalon with triangular median lobe and large lateral lobes. Posterior margins of pereonites 1 – 4 rounded. Pleon continuous with pereon. Telson triangular, apex rounded. Male: fifth antennal segment flattened; pleopod 1 exopod heart-shaped; pleopod 2 exopod triangular with long distal margin.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	etymology	Etymology The specific epithet ‘ guadianensis ’ refers to the Guadiana River, which flows through the southwestern Iberian Peninsula, crossing both Portugal and Spain. This name highlights the species’ association with the river basin, as the specimens were mostly found in localities near its course (Fig. 1).	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	materials_examined	Type material Holotype PORTUGAL – Évora • ♂; Alqueva; 38.1996 ° N, 7.5162 ° W; 6 Mar. 2025; L. P. Da Silva leg.; MNCN, MNCN 20.04 / 42158 (ex. LPS 1051 a). Paratypes PORTUGAL – Évora • 1 ♀ (depigmented, anophthalmous); Campinho; 38.3511 ° N, 7.4576 ° W; 22 Apr. 2023; Da Silva leg.; LPS, LPS 903 • 1 ♀; Campinho; 38.3460 ° N, 7.4494 ° W; 9 Dec. 2024; Da Silva leg.; LPS, LPS 973 • 1 ♂; 38.3467 ° N, 7.4500 ° W; 9 Dec. 2024; Da Silva leg.; LPS, LPS 977 a • 1 ♂; same data as for preceding; LPS, LPS 977 b • 1 ♂; same data as for preceding; JC, JC 1331 (ex. LPS 977 b) • 1 ♀; same data as for preceding; LPS, LPS 977 c • 2 ♀♀; same data as for preceding; LPS, LPS 977 d • 2 ♀♀; same data as for preceding; JC, JC 1332 (ex. LPS 977 d) • 2 ♂♂ (depigmented, anophthalmous); Campinho; 38.3466 ° N, 7.4498 ° W; 9 Dec. 2024; Da Silva leg.; LPS, LPS 978 a • 3 ♂♂ (depigmented, anophthalmous); same data as for preceding; MNCN, MNCN 20.04 / 42159 - 42161 (ex. LPS 978 a) • 1 ♂ (depigmented, anophthalmous); same data as for preceding; JC, JC 1330 (ex. LPS 978 a) • 1 ♀ (depigmented, anophthalmous); same data as for preceding; LPS, LPS 978 b • 1 ♀ (depigmented, anophthalmous); same data as for preceding; LPS, LPS 978 c • 1 ♂ (depigmented, anophthalmous); Mourão, 38.3394 ° N, 7.2838 ° W; 11 Dec. 2024; L. P. Da Silva leg.; LPS, LPS 992 • 1 ♂; same data as for holotype; LPS, LPS 1051 b • 1 ♀; Alqueva; 38.1995 ° N, 7.5154 ° W; 6 Mar. 2025; L. P. Da Silva leg.; LPS, LPS 1053 • 2 ♀♀; Évora Monte; 38.7246 ° N, 7.6885 ° W; 6 Mar. 2025; L. P. Da Silva leg.; LPS, LPS 1045 • 7 ♀♀; Évora Monte; 38.7247 ° N, 7.6886 ° W; 6 Mar. 2025; L. P. Da Silva leg.; LPS, LPS 1046 • 1 ♂; Évora Monte; 38.7248 ° N, 7.6886 ° W; 6 Mar. 2025; L. P. Da Silva leg.; LPS, LPS 1047 a • 7 ♀♀; same data as for preceding; LPS, LPS 1047 b • 4 ♀♀; same data as for preceding; MNCN, MNCN 20.04 / 42162 - 42165 (ex. LPS 1047 b). – Faro • 1 ♀; Alcaria; 37.4098 ° N, 7.6359 ° W; 10 Dec. 2024; L. P. Da Silva leg.; LPS, LPS 980 a • 5 ♀♀; same data as for preceding; LPS, LPS 980 b • 1 ♂; Alcaria; 37.4099 ° N, 7.6360 ° W; 10 Dec. 2024; L. P. Da Silva leg.; LPS, LPS 982 a • 2 ♂♂; same data as for preceding; MNCN, MNCN 20.04 / 42166 - 42167 (ex. LPS 982 a) • 4 ♀♀; same data as for preceding; LPS, LPS 982 b.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	description	Description MEASUREMENTS. Maximum body length: 4.5 mm in females, 4 mm in males. BODY. Elongated. Pigmentation of dorsal integument variable, from light orange-brown to faintly pigmented or total depigmentation (Fig. 2 A – F); ventral surface white. Eyes composed of four black ommatidia (Figs 2 A – B, D – E, 3 C); 10 depigmented specimens without ommatidia (Fig. 2 F – G). INTEGUMENTARY CHARACTERS. Dorsal integument without granulation, bearing fan-shaped scale-setae of different sizes. Large scale-setae on posterior margins of pereonites; medium-sized scale-setae in irregular lines on cephalon and single median line on pereonites, forming longitudinal lines, also on posterior margins of pleonites and telson; small scale-setae sparse on pereon, in median line on pleonites and two on telson (Figs 2 A – H, 3 A, C). Noduli laterales distant from lateral and posterior margins on anterior epimera, progressively approaching these margins posteriorly, particularly posterior margin (Fig. 3 B, D). SOMATIC CHARACTERS. Cephalon without frontal line, vertex curved, continuous with frontal area; median lobe large, triangular, tip pointed, extending beyond large rectangular lateral lobes (Figs 2 A – B, D – F, 3 C). Pereon narrow; posterior margins of pereonites 1 – 4 rounded, 5 – 7 with small posterior projections. Pleon continuous with pereon; epimera large; posterior margins of pleonite 5 epimera shorter than posterior edge of uropod protopod. Telson triangular, twice as wide as long, lateral sides slightly concave, posterior tip broadly rounded, barely reaching uropod protopod posterior margin (Figs 2 C, 3 C). APPENDAGES. Mandibles with 1 + 1 free penicils (in right mandible clearly separated), molar penicil dichotomized into three branches (Fig. 4 A – B). Maxillula inner endite with two penicils, outer endite with eight teeth, three bifid (Fig. 4 C). Maxilla inner lobe wider than outer lobe, covered with thin setae (Fig. 4 D). Maxilliped basis bearing sparse scale-setae, palp with two setae of different length on proximal article and three long setae on distal article, endite with one seta that surpasses distal margin (Fig. 4 E). Antennula with three segments, second much shorter, third with five short aesthetascs, three subapical and two apical, and with lateral triangular spine (Fig. 5 A). Antennae short, not reaching posterior margin of pereonite 2; flagellum with two segments, second 2.5 × as long as first, with two groups of two small aesthetascs at one-third and two-thirds (Figs 2 I, 5 B – C). Uropod protopod longer than telson tip; endopod and exopod clearly exceeding telson tip (Figs 3 C, 5 D). Pereopods: merus to propodus bearing sparse, long setae on sternal margin. Dactylus curved, inner claw not exceeding outer; dactylar and ungual setae slender, not exceeding outer claw (Fig. 5 E – F). SEXUAL CHARACTERS. Male antennae, fifth segment more flattened than in female (Figs 2 I, 5 B – C). Pereopods without sexual differentiation (Fig. 5 E – F). Male pleopod 1 endopod long, curved in posterior third, distal inner portion bearing two small setae (Fig. 6 A); exopod heart-shaped due to small internal projection, several small setae along external margin (Figs 2 J, 6 B). Male pleopod 2 endopod slightly longer than exopod, ending in thin tip (Fig. 6 C); exopod triangular, long distal margin, bearing one seta near tip (Figs 2 K, 6 D). Male exopod 3 – 5 pleopods as in Fig. 6 E – G; female exopods as in Fig. 6 H – L.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F10E4B3DFDE59D2DB0DAFA13.taxon	biology_ecology	Ecology The species was found beneath rocks during the day, in soils developed over schistose metamorphic rocks of varying metamorphic grade. The tree layer was dominated by Quercus rotundifolia Lam., with occasional Quercus suber L. individuals. Understory vegetation ranged from dense shrubland to sparsely vegetated ground.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	description	urn: lsid: zoobank. org: act: 0 A 4 D 023 D-BA 88 - 4913 - 84 AD-AD 8012 EE 7029 Figs 1, 7 – 11	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	diagnosis	Diagnosis Body depigmented, without eyes. Dorsal integument without granulation, with large fan-shaped scale-setae in transverse lines. Cephalon with median lobe triangular with rounded tip; lateral lobes large. Posterior margins of pereonites 1 – 3 rounded; remaining pereonites with small posterior projection. Pleon continuous with pereon. Telson triangular, apex rounded. Male: pleopod 1 exopod oval; pleopod 2 exopod triangular with long distal lobe.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	etymology	Etymology The specific name refers to ‘ Malaca’, the name by which the Romans knew the ancient Phoenician city of ‘ Malaka’, located in ‘ Hispania Ulterior’ until the reign of Augustus, when it became part of ‘ Baetica’. This city gave rise to the modern Málaga, which also lends its name to the surrounding province. In Latin, natives of the city were called ‘ malacitanus ’; ‘ malacitana ’ is the feminine form, used here to denote a female native of this region of Andalusia (Fig. 1).	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	materials_examined	Type material Holotype SPAIN – Málaga • ♂; Rincón de la Victoria; 36.7280 ° N, 4.2812 ° W; 18 Oct. 2024; J. L. Rando leg.; MNCN, MNCN 20.04 / 42168 (ex. JC 1276). Paratypes SPAIN – Málaga • 1 ♂, 2 ♀♀; Málaga, 36.7258 ° N, 4.4587 ° W; 14 Dec. 2024; J. L. Rando leg.; MNCN, MNCN 20.04 / 42181 - 42183 (ex. JC 1272) • 7 ♂♂; 36.7260 ° N, 4.4587 ° W; 22 Dec. 2024; J. L. Rando leg.; JC, JC 1273 • 9 ♀♀; same data as for preceding; JC, JC 1274 • 1 ♀; 36.7258 ° N, 4.4587 ° W; 22 Dec. 2024; J. L. Rando leg.; JC, JC 1281 • 4 ♀♀; 36.7323 ° N, 4.4605 ° W; 30 Dec. 2024; J. L. Rando leg.; MNCN, MNCN 20.04 / 42186 - 42189 (ex. JC 1278) • 1 ♀; same data as for preceding; MNCN, MNCN 20.04 / 42190 (ex. JC 1279) • 5 ♂♂; 36.7261 ° N, 4.4590 ° W; 14 Mar. 2025; J. L. Rando leg.; MNCN, MNCN 20.04 / 42169 - 42173 (ex. JC 1270) • 7 ♀♀; same data as for preceding; MNCN, MNCN 20.04 / 42174 - 42180 (ex. JC 1271) • 1 ♀; Rincón de la Victoria; 36.7231 ° N, 4.2827 ° W; 27 Apr. 2024; J. L. Rando leg.; JC, JC 1067 • 1 ♂; same data as for preceding; JC, JC 1070 • 1 ♂; same data as for holotype; MNCN, MNCN 20.04 / 42184 (ex. JC 1275) • 2 ♂♂; same data as for holotype; JC, JC 1276 • 1 ♀; same data as for holotype; MNCN, MNCN 20.04 / 42185 (ex. JC 1277) • 1 ♀; same data as for holotype; JC, JC 1280.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	description	Description MEASUREMENTS. Maximum body length: 3.5 mm in females, 3 mm in males. BODY. Depigmented and anophthalmous (Fig. 7 A – C). INTEGUMENTARY CHARACTERS. Dorsal integument without granulation, bearing large fan-shaped scale-setae in five lines on cephalon, three transverse lines on pereonites (one on posterior margin), corresponding to 4 + 4 longitudinal lines pattern; pleonites with single posterior row; smaller scale-setae between longitudinal rows, forming one transverse line at median region of pleonites (Figs 7 A – D, 8 A, C). Noduli laterales close to posterior margins, slightly away from lateral margins (Figs 3 D, 8 B). SOMATIC CHARACTERS. Cephalon without defined frontal line, vertex fused with frontal area; median lobe large, triangular, tip rounded; lateral lobes large, trapezoid, laterally oriented (Figs 7 A – B, 8 C). Posterior margins of pereonites 1 – 3 rounded, straight in 4, 5 – 7 with small projection. Pleon continuous with pereon; epimera large; posterior corner of pleonite 5 slightly shorter than posterior edge of uropod protopod. Telson large, wider than long (1.6: 1), distinct angles between base and triangular tip, apex rounded, projecting beyond pleonite 5 (Figs 7 C, 8 C). APPENDAGES. Mandibles with 1 + 1 free penicils (in right mandible clearly separated), molar penicil dichotomised into three branches (Fig. 9 A – B). Maxillula inner endite with two penicils, outer endite with eight teeth, two bifid (Fig. 9 C). Maxilla with lobes subequal in width (Fig. 9 D). Maxilliped basis bearing sparse setae, palp with one seta on proximal article and three long setae on distal article, endite with one seta surpassing distal margin. (Fig. 9 E). Antennula with three segments, second much shorter, third with five short aesthetascs, three subapical and two apical, and with lateral triangular spine (Fig. 10 A). Antennae short, not reaching posterior margin of pereonite 2; flagellum with two segments, second 3 × as long as first, with three small aesthetascs in two groups inserted approximately at median region (Fig. 10 B – C). Uropod protopod much shorter than telson tip; endopod projecting beyond telson (Figs 7 C, 8 D). Pereopods: merus to propodus bearing sparse, long setae on sternal margin. Dactylus curved, inner claw not exceeding outer; dactylar and ungual setae slender, not exceeding outer claw (Fig. 10 E). SEXUAL CHARACTERS. Male antennae, fifth segment flattened, in female cylindrical (Fig. 10 B – C). Pereopods without sexual differentiation (Fig. 10 E). Male pleopod 1 endopod long, curved in distal third, distal inner portion bearing small setae (Figs 7 E, 11 A); exopod oval (Figs 7 E, 11 B). Male pleopod 2 endopod much longer than exopod, ending in thin tip (Figs 7 F, 11 C); exopod triangular, long distal lobe, bearing two setae near tip (Figs 7 F, 11 D). Male exopod 3 – 5 pleopods as in Fig. 11 E – G; female exopods as in Fig. 11 H – L.	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
1513B739F1044B3BFDF19A20B423FD97.taxon	biology_ecology	Ecology This species was found in areas dominated by various therophytes and olive groves (Olea europaea L.).	en	Cifuentes, Julio, Rando, José Luis, Da Silva, Luís P. (2026): Two new species of the genus Trichorhina Budde-Lund, 1908 (Crustacea: Isopoda: Platyarthridae) from the Ibero-Balearic region. European Journal of Taxonomy 1072: 1-19, DOI: 10.5852/ejt.2026.1072.3297, URL: https://europeanjournaloftaxonomy.eu/index.php/ejt/article/download/3297/14525
