Sinothomisus dawai Wang, Lu & Zhang, 2024

Wang, Lu-Yu, Mu, Yan-Nan, Lu, Qian-Le, Xu, Yong-Qiang, Bu, Hai-Tao, Zhang, Feng & Zhang, Zhi-Sheng, 2024, Description of six new crab-spider species and first description of the male of Pharta xizang Liu & Yao, 2023 from Medog, Xizang, China (Araneae, Thomisidae), ZooKeys 1217, pp. 195-213 : 195-213

publication ID	https://doi.org/ 10.3897/zookeys.1217.127555
publication LSID	lsid:zoobank.org:pub:B7E1DDC6-9834-42EA-A80E-77ABAADF14F1
DOI	https://doi.org/10.5281/zenodo.14025557
persistent identifier	https://treatment.plazi.org/id/36CEFA28-BE47-4CBD-8D15-BD72D8EAC7D9
taxon LSID	lsid:zoobank.org:act:36CEFA28-BE47-4CBD-8D15-BD72D8EAC7D9
treatment provided by	ZooKeys by Pensoft
scientific name	Sinothomisus dawai Wang, Lu & Zhang
status	sp. nov.

Treatment

Sinothomisus dawai Wang, Lu & Zhang sp. nov.

Figs 2 B, C View Figure 2 , 3 G, H View Figure 3 , 8 View Figure 8 , 11 View Figure 11

Type material.

Holotype • ♂ ( SWUC -T-THO-04-01 ), China, Xizang, Medog County, Mirage Observation Deck , 29°20'36"N, 95°20'43"E, elev. 1297 m, 8 July 2023, Z. S. Zhang, L. Y. Wang, Q. L. Lu and X. L. Chen leg. GoogleMaps Paratypes: • 1 ♂ ( SWUC -T-THO-04-02 ), same data as for holotype GoogleMaps ; • 1 ♀ ( SWUC -T-THO-04-03 ), Beibeng Township, Damu , 29°14'51"N, 95°11'1"E, elev. 924 m, 28 June 2018, L. Y. Wang, Y. N. Mu and Z. S. Wu leg. GoogleMaps

Etymology.

The specific name is a patronym in honor of Mr. Dawa from the Tibet Plateau Institute of Biology in Lhasa, Xizang.

Diagnosis.

The new species resembles S. beibeng Wang, Lu & Zhang , sp. nov. (Fig. 7 View Figure 7 ) in having same shaped bulb and same position of embolus origin, but differs from the latter by the long and large retrolateral tibial apophysis (vs short and C-like in S. beibeng ), the small spine between the retrolateral tibial apophysis and the dorsal tibial apophysis (vs absent in S. beibeng ), the fingernail-like protuberance at epigynal plate (vs absent in S. beibeng ) (Fig. 8 View Figure 8 ).

Description.

Male holotype ( SWUC -T-THO-04-01 , Figs 2 B View Figure 2 , 3 G View Figure 3 ) total length 4.21. Prosoma 2.19 long, 2.04 wide; Opisthosoma 2.34 long, 1.92 wide. Carapace border black, with a large deep brown spot in the middle. Eye sizes and interdistances: AME 0.07, ALE 0.18, PME 0.01, PLE 0.16; AME – AME 0.24, AME – ALE 0.21, PME – PME 0.24, PME – PLE 0.45, ALE – PLE 0.21. MOA 0.24 long, anterior width 0.37, posterior width 0.29. Clypeus height 0.18. Chelicerae brown. Labium and endites brown, longer than wide. Sternum brown and scutellate, with brown hairs. Leg measurements: I 8.40 (2.54, 3.04, 1.58, 1.24); II 8.52 (2.62, 3.07, 1.63, 1.20); III 5.42 (1.81, 1.98, 0.91, 0.72); IV 5.34 (1.70, 1.99, 0.95, 0.70). Leg formula: 2134. Opisthosoma oval, yellow, with black spot. Spinnerets brown.

Palp (Fig. 8 A, B View Figure 8 ). Tibia as long as wide. Ventral tibial apophysis small, thumb shaped, closing to retrolateral tibial apophysis. Retrolateral tibial apophysis middle part bulging, with a hook end. Dorsal tibial apophysis small, cone-shaped. A spine-like tubercle between retrolateral tibial apophysis and dorsal tibial apophysis. Bulb flat, apical tegular apophysis nail-shaped. Embolus filiform, originating at approximately 6 - o’clock position, curved along with bulb, tip staying in cymbial furrow.

Female paratype ( SWUC -T-THO-04-03 , Fig. 3 H View Figure 3 ) total length 5.59. Prosoma 2.28 long, 2.25 wide; opisthosoma 3.10 long, 2.61 wide. Eye sizes and interdistances: AME 0.08, ALE 0.18, PME 0.02, PLE 0.15; AME – AME 0.28, AME – ALE 0.25, PME – PME 0.25, PME – PLE 0.54, ALE – PLE 0.25. MOA 0.26 long, anterior width 0.46, posterior width 0.33. Clypeus height 0.22. Leg measurements: I 7.00 (2.19, 2.56, 1.30, 0.95); II 7.35 (2.30, 2.79, 1.28, 0.98); III 5.05 (1.65, 1.90, 0.76, 0.74); IV 4.84 (1.44, 1.86, 0.84, 0.70). Leg formula: 2134.

Epigyne (Fig. 8 C, D View Figure 8 ). Epigynal plate wider than long, with a fingernail-like protuberance at middle part. Copulatory openings slit like, far away from each other. Copulatory ducts S-like. Spermathecae C-shaped. Fertilization ducts crescent.

Variation.

Males (n = 2) total length 4.21–5.17.

Distribution.

China (Xizang, Medog) (Fig. 11 View Figure 11 ).