Irura yarlungzangbo, Wang & Mi & Li & Xu, 2024

Wang, Cheng, Mi, Xiaoqi, Li, Shuqiang & Xu, Xiang, 2024, Taxonomic notes of jumping spiders (Araneae, Salticidae) from Guangxi, Hainan, Sichuan, Xizang and Yunnan, China, ZooKeys 1221, pp. 205-277 : 205-277

publication ID	https://doi.org/ 10.3897/zookeys.1221.135640
publication LSID	lsid:zoobank.org:pub:B61D8EFC-2753-4B88-8A36-DAB1F37D96BB
DOI	https://doi.org/10.5281/zenodo.14509084
persistent identifier	https://treatment.plazi.org/id/457EB737-C636-5BB4-AF7A-5830D2CF5EC1
treatment provided by	ZooKeys by Pensoft
scientific name	Irura yarlungzangbo
status	sp. nov.

Treatment

Irura yarlungzangbo sp. nov.

Figs 9 View Figure 9 , 10 View Figure 10 , 47 View Figure 47

Type material.

Holotype ♀ ( TRU - JS 0739 ), China: • Xizang Autonomous Region, Medog County, Beibeng Township , Deergong Village , Yarlung Zangbo National Nature Reserve (29 ° 10.84 ' N, 95 ° 8.67 ' E, ca 1670 m), 25. V. 2024, X. Q. Mi et al. leg GoogleMaps . Paratypes • 1 ♂ 2 ♀ ( TRU - JS 0740–0742 ), same data as for holotype GoogleMaps .

Etymology.

The specific name refers to the Yarlung Zangbo National Nature Reserve, the type locality; noun in apposition.

Diagnosis.

The female of Irura yarlungzangbo sp. nov. resembles that of I. zhangae Gan, Wang & Peng, 2017 in having a similar epigyne, but can be easily distinguished by the anterior chamber of spermatheca ( AS), ~ 1.3 × longer than wide (Fig. 10 B View Figure 10 ) vs ~ 2 × longer than wide ( Gan et al. 2017: fig. 2 F, G, 3 D, E), and by the absence of an incision between copulatory openings (Fig. 10 A View Figure 10 ) vs having a square incision between copulatory openings ( Gan et al. 2017: figs 2 F, G, 3 D, E). The male can be easily distinguished by the presence of dorsal cymbial extension ( DCE), which bears several retromarginal spines (Fig. 9 B, C View Figure 9 ) vs absent in other congeners (see Metzner 2024).

Description.

Female (Fig. 10 A, B, D – G View Figure 10 ). Total length 3.78. Carapace 1.43 long, 1.65 wide. Abdomen 2.05 long, 1.65 wide. Eye sizes and interdistances: AME 0.38, ALE 0.22, PLE 0.19, AERW 1.31, PERW 1.55, EFL 0.74. Legs: I 3.28 (1.05, 0.75, 0.65, 0.48, 0.35), II 2.31 (0.75, 0.45, 0.45, 0.38, 0.28), III 2.02 (0.63, 0.35, 0.38, 0.38, 0.28), IV 2.49 (0.85, 0.43, 0.50, 0.43, 0.28). Carapace red-brown, covered with thin brown setae and pale scales, with pair of dark spots centrally on eye field. Chelicerae incised on base of anterior surface, with two promarginal teeth and one retromarginal fissidentate tooth with three cusps. Leg I robust, with two pairs of ventral spines on tibiae and metatarsi. Abdomen oval, dorsum mainly pale, with two pairs of anterior muscle depressions and medio-posterior shallow depressions surrounded by brown C-shaped stripes; venter with dark brown posterior half, and two pairs of pale yellow dotted lines.

Epigyne (Fig. 10 A, B View Figure 10 ) ~ 1.65 × wider than long, weakly sclerotized; copulatory openings (CO) postero-marginally located, opened posterolaterally, separated by> 1 / 3 epigynal width; copulatory ducts ( CD) thin, slightly curved proximally and distally, and connected to distal portions of junction ducts of spermathecae ( JS); spermathecae (S) divided into oval anterior chamber ( AS) and spherical posterior chamber ( PS); fertilization ducts ( FD) originating at antero-inner margins of anterior chamber of spermatheca.

Male (Figs 9 View Figure 9 , 10 C, H View Figure 10 ). Total length 2.63. Carapace 1.29 long, 1.37 wide. Abdomen 1.41 long, 1.22 wide. Eye sizes and interdistances: AME 0.35, ALE 0.20, PLE 0.15, AERW 1.14, PERW 1.31, EFL 0.65. Legs: I 3.53 (1.05, 0.75, 0.78, 0.50, 0.45), II 2.34 (0.75, 0.43, 0.45, 0.43, 0.28), III 2.00 (0.63, 0.33, 0.38, 0.38, 0.28), IV missing. Carapace (Fig. 10 C View Figure 10 ) brown, covered with purplish gold scales. Chelicerae (Fig. 10 H View Figure 10 ) similar to that of female except retromarginal fissidentate tooth only with two cusps. Legs brown, mingled with green. Abdomen (Fig. 10 C View Figure 10 ) oval, dorsum mainly dark brown, covered with purplish gold scales, with pair of pale median patches and transverse, posterior, pale band; venter dark brown.

Palp (Fig. 9 A – C View Figure 9 ): femur length / width ratio ca 2.72; patella ~ 1.6 × longer than wide in retrolateral view; tibia slightly longer than patella, with well-developed, lamellar retrolateral apophysis ( RTA) and swollen dorsal process ( DTP); cymbium ~ 2 × longer than wide, with weakly sclerotized retrolateral process (CP) partly covered by retrolateral tibial apophysis and with pointed end, and well developed, posteriorly extending dorsal extension ( DCE) bearing several retromarginal spines; tegulum flat, oval; embolus (E) filiform, 1.2 × longer than tegulum, originating at ca 9 o’clock position.

Distribution.

Known only from the type locality in Xizang, China (Fig. 47 View Figure 47 ).