Latouchia wenruni Lin & Li, 2023

Lin, Yejie, Li, Shuqiang & Pham, Dinh-Sac, 2023, Taxonomic notes on some spider species (Arachnida: Araneae) from China and Vietnam, Zoological Systematics 48 (1), pp. 1-99 : 12-13

Latouchia wenruni Lin & Li , sp. nov. ( Figs 9–10 )

Etymology. The species is named after Mr. Run Wen, the collector of the holotype and paratypes; noun (name) in genitive case.

Diagnosis. The male of the new species is similar to that of L. yuanjingae Lin & Li, 2022 by the straight embolus and the length of embolus is as long as the bulb, but it can be distinguished by the serrated embolus in ventral view (vs. smooth in L. yuanjingae ) and lacking bristles laterally on the tibia tip (vs. present in L. yuanjingae ). The female of the new species can be distinguished from those of L. yejiei Zhang & Wang, 2021 by the prominent spermathecal heads (vs. absent in L. yejiei ).

Description. Male (holotype). Total length 9.71; carapace 4.72 long, 4.16 wide, opisthosoma 4.99 long, 3.37 wide. Eye sizes and interdistances: AME 0.16, ALE 0.29, PME 0.21, PLE 0.28, AME–AME 0.07, AME–ALE 0.07, PME–PME 0.30, PME–PLE 0.02, AME–PME 0.09, ALE–PLE 0.09. Chelicerae with five promarginal and five retromarginal teeth. Leg measurements: I 14.18 (4.34, 5.08, 2.91, 1.85), II 12.59 (3.81, 4.16, 2.82, 1.80), III 10.52 (2.88, 3.05, 2.70, 1.89), IV 15.14 (4.16, 5.04, 3.85, 2.09).

Coloration ( Fig. 10B ). Carapace dark brown to brown, covered with black setae. Chelicerae dark brown. Endites and labium red-brown. Sternum yellow-brown. Legs brown with black setae. Opisthosoma oval, dark brown, dorsum with numerous irregular white spots, laterally brown, ventrum yellow-brown. Spinnerets short, yellow-brown.

Palp ( Fig. 9 ). Tibia four times longer than wide, bristles on lateral side of tip are stout. Embolus slightly curved, tip with five serrations and an apophysis.

Female (IZCAS-Ar43840). Total length 18.23; carapace 8.54 long, 7.23 wide, opisthosoma 9.69 long, 6.61 wide. Eye sizes and interdistances: AME 0.26, ALE 0.43, PME 0.21, PLE 0.34, AME–AME 0.16, AME–ALE 0.22, PME–PME 0.58, PME–PLE 0.14, AME–PME 0.16, ALE–PLE 0.33. Chelicerae with six promarginal and eight retromarginal teeth. Leg measurements: I 18.64 (6.27, 7.39, 3.14, 1.84), II 15.28 (5.32, 5.57, 2.67, 1.72), III 14.22 (4.62, 5.23, 2.22, 2.15), IV 20.51 (6.29, 7.54, 4.19, 2.49).

Coloration ( Fig. 10C ). Similar to that of male except paler.

Endogyne ( Fig. 10A ). Spermathecae sock shaped, with numerous glandular pores; stalks almost as wide as spermatheca.

Material examined. Holotype ♂ (IZCAS-Ar43837), China: Hainan, Changjiang Li Autonomous County, Bangxi Baomeiling (19.2815°N, 109.0987°E, elev. 603 m), 13 September 2022, Run Wen, Chengbin Wen and Neng Guo leg. Paratypes. 3♀ (IZCAS-Ar43838–Ar43840), same data as holotype .

Distribution. Known only from the type locality.

Figures

Figure 9. Latouchia wenruni Lin & Li, sp. nov., holotype male, left palp. A. Ventral view; B. Retrolateral view; C. Embolus tip, dorsal view.Abbreviations: AE—apophysis of embolic tip; E—embolus. Scale bars: A–B=0.5mm; C=0.1mm.

Figure 10. Latouchia wenruni Lin & Li, sp. nov., holotype male (B) and paratype female (A, C). A. Vulva, dorsal view; B–C. Habitus, dorsal view. Abbreviations: SH—spermathecal head; Sta—stalk. Scale bars: A=0.3mm; B–C=2.0mm.