Spilosynema motuo 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.14025559
persistent identifier	https://treatment.plazi.org/id/C8CEDAA7-E58F-43AF-B415-3B0C06A84AE4
taxon LSID	lsid:zoobank.org:act:C8CEDAA7-E58F-43AF-B415-3B0C06A84AE4
treatment provided by	ZooKeys by Pensoft
scientific name	Spilosynema motuo Wang, Lu & Zhang
status	sp. nov.

Treatment

Spilosynema motuo Wang, Lu & Zhang sp. nov.

Figs 2 D View Figure 2 , 3 I – J View Figure 3 , 9 View Figure 9 , 11 View Figure 11

Type material.

Holotype • ♂ ( SWUC -T-THO-05-01 ), China, Xizang, Medog County, Beibeng Township , 29°14.87'N, 95°11.02'E, elev. 924 m, 19 December 2023, Z. S. Zhang, L. Y. Wang, Q. L. Lu and Y. N. Mu leg. GoogleMaps Paratypes: • 1 ♀ ( SWUC -T-THO-05-02 ), 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 • 1 ♀ ( SWUC -T-THO-05-03 ), Dexing Township, Guoguotang , 29°19.560'N, 95°16.360'E, elev. 1025 m, 29 June 2018, L. Y. Wang, Y. N. Mu and Z. S. Wu leg. GoogleMaps • 1 ♀ ( SWUC -T-THO-05-04 ), Beibeng Township, Bayang Village , 29°12'49"N, 95°5'43"E, elev. 738 m, 7 July 2023, Z. S. Zhang, L. Y. Wang, Q. L. Lu and X. L. Chen leg. GoogleMaps • 1 ♀ ( SWUC -T-THO-05-05 ), Beibeng Township, Badeng Village , 29°16'28"N, 95°10'7"E, elev. 851 m, 7 July 2023, Z. S. Zhang, L. Y. Wang, Q. L. Lu and X. L. Chen leg. GoogleMaps • 3 ♀ ( SWUC -T-THO-05-06 ~ 08), 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

Etymology.

The specific name is derived from the type locality (medog = motuo); it is a noun in apposition.

Diagnosis.

The male of this new species resembles S. comminum Tang & Li, 2010 ( Tang and Li 2010: 70, figs 52 A – D, 54 A, B) in the bulb of the same shape and the embolus origin in the same position, but it differs from the latter by the absence of an intermedial tibial apophysis (vs presence in S. comminum ), the conical tutacular apophysis (vs hook-shaped in S. comminum ) (Fig. 9 A, B View Figure 9 ). The female of this new species can be distinguished from all other Spilosynema species in having the epigynal plate with a hood.

Description.

Male holotype (Fig. 3 I View Figure 3 ) total length 4.20. Prosoma 2.12 long, 1.98 wide; Opisthosoma 2.18 long, 1.65 wide. Carapace yellow brown. Eye sizes and interdistances: AME 0.11, ALE 0.21, PME 0.09, PLE 0.15; AME – AME 0.19, AME – ALE 0.18, PME – PME 0.23, PME – PLE 0.34, ALE – PLE 0.26. MOA 0.45 long, anterior width 0.40, posterior width 0.40. Clypeus height 0.19. Chelicerae brown, with 2 promarginal and 2 retromarginal teeth. Labium and endites brown, longer than wide. Sternum brown and scutellate, with brown hairs. Leg measurements: I 10.49 (2.89, 3.53, 2.64, 1.43); II 10.38 (2.88, 3.59, 2.55, 1.36); III 5.47 (1.72, 1.99, 0.98, 0.78); IV 5.96 (1.99, 2.11, 1.11, 0.75). Leg formula: 1243. Opisthosoma oval, yellow-brown, with a scaly spot. Spinnerets brown.

Palp (Fig. 9 A, B View Figure 9 ). Tibia as long as wide. Ventral tibial apophysis strong, tip slightly hooked. Retrolateral tibial apophysis curved and strongly sclerotized. Cymbium base with two apophyses. Bulb flat. Embolus filiform, originating at approximately 8 - o’clock position, curved along with bulb, tip staying in cymbial furrow.

Female paratype ( SWUC -T-THO-05-02 , Fig. 3 J View Figure 3 ) total length 5.23. Prosoma 2.28 long, 2.18 wide; opisthosoma 2.93 long, 2.58 wide. Eye sizes and interdistances: AME 0.11, ALE 0.22, PME 0.10, PLE 0.14; AME – AME 0.25, AME – ALE 0.20, PME – PME 0.30, PME – PLE 0.44, ALE – PLE 0.35. MOA 0.45 long, anterior width 0.49, posterior width 0.53. Clypeus height 0.24. Leg measurements: I 10.10 (2.97, 3.64, 2.28, 1.21); II 9.98 (3.02, 3.49, 2.29, 1.18); III 5.10 (1.55, 1.90, 0.98, 0.67); IV 5.58 (1.82, 1.92, 1.10, 0.74). Leg formula: 1243.

Epigyne (Fig. 9 C, D View Figure 9 ). Epigynal plate wider than long, with a hood at middle. Copulatory openings slit-like, distant from each other. Copulatory ducts S-like. Spermathecae peanut-shaped. Fertilization ducts crescent-shaped.

Variation.

Females (n = 7) total length 5.23–5.93.

Distribution.

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