Onomastus zhuwu Lin & Li, 2024

Lin, Yejie, Li, Shuqiang, Mo, Haolin & Wang, Xihao, 2024, Thirty-eight spider species (Arachnida: Araneae) from China, Indonesia, Japan and Vietnam, Zoological Systematics 49 (1), pp. 4-98 : 54

Onomastus zhuwu Lin & Li , sp. nov. ( Figs 45–46 , 49C–D )

Etymology. The species is named after Zhu Wu, a character in the classic Chinese novel Outlaws of the Marsh; noun in apposition.

Diagnosis. The male of the new species can be distinguished from all other congeners by the mesal branch of the tegular apophysis greatly extended and a large semicircular anterior outgrowth on the tegular apophysis, width about 1/3 of the bulb width in retrolateral view. Females of O. zhuwu Lin & Li , sp. nov. are similar to O. chenae Lin & Li, 2020 by having the same shaped epigyne. However, O. zhuwu Lin & Li , sp. nov. can be distinguished by the slit like copulatory openings located medially, longitudinal (vs. copulatory openings broad, located posteriorly, transverse).

Description. Male (holotype). Total length 3.68, carapace 1.69 long, 1.18 wide; opisthosoma 2.15 long, 0.74 wide. Eye sizes and interdistances: AME 0.36, ALE 0.17, PME 0.13, PLE 0.04, AME–AME 0.03, AME–ALE 0.05, PME–PME 0.48, PME–PLE 0.22, ALE–PLE 0.10, AERW 0.92, PERW 0.74, EFL 0.68. Chelicerae with 4 promarginal and 4 retromarginal teeth. Leg measurements: I 4.06 (1.65, 2.26, 1.40, 0.75), II 5.44 (1.60, 1.91, 1.33, 0.60), III 5.64 (1.53, 1.74, 1.76, 0.61), IV 7.23 (1.92, 2.20, 2.31, 0.80).

Coloration ( Fig. 49C ). Carapace white, black ring around PLEs and PMEs, cephalic part covered with golden setae. Clypeus white, covered with white setae. Chelicerae white with 5 promarginal and 5 retromarginal teeth. Endites, labium and sternum white. Legs white, base of tibia with black spot. Opisthosoma elongated oval, white.

Palp ( Fig. 45 ). Femur unmodified, almost 2 times longer than wide. Patella with subtriangular ventral apophysis, longer than wide. Tibia as long as wide, without apophyses. Cymbium 1.5 times longer than wide, covered with setae. Bulb approximately as long as wide. Sperm duct clearly visible, forming several loops. Conductor wide, with strongly serrated, spur on mesal branch of conductor straight. Tegular apophysis with 2 branches, anterior outgrowth semicircular, ventral outgrowth, tip blunt. Embolus filiform, long, looped.

Female (one paratype Ar44850). Total length 3.74, carapace 1.52 long, 1.03 wide; opisthosoma 0.74 long, 2.16 wide. Eye sizes and interdistances: AME 0.36, ALE 0.15, PME 0.12, PLE 0.05, AME–AME 0.02, AME–ALE 0.06, PME–PME 0.51, PME–PLE 0.20, ALE–PLE 0.07, AERW 0.89, PERW 0.72, EFL 0.63. Chelicerae with 5 promarginal and 4 retromarginal teeth. Leg measurements: I 4.57 (1.34, 1.81, 0.96, 0.46), II 4.15 (1.13, 1.58, 0.98, 0.46), III 4.60 (1.28, 1.46, 1.36, 0.50), IV 6.08 (1.75, 1.93, 1.84, 0.56) .

Coloration ( Fig. 49D ). Similar to that of male.

Epigyne ( Fig. 46 ). Epigynal plate almost 1.5 times wider than long. Copulatory openings longitudinal. Copulatory ducts helicoid. Spermathecae almost oval. Fertilization duct directed at 1:30-o’clock-position from spermatheca.

Material examined. Holotype ♂ (IZCAS-Ar44849), China: Chongqing, Chengkou Co., 16.VII.2023, Yuyang Zhou leg. Paratypes. 7♀ (IZCAS-Ar44850–Ar44856), same data as holotype .

Distribution. Known only from the type locality.

Figures

Figure 45. Onomastus zhuwu Lin & Li, sp. nov., holotype male. A. Left palp, ventral view; B. Same, retrolateral view. Red arrows show the serrations on conductor.Abbreviations: C—conductor; E—embolus; MAP—mesal branch of tegular apophysis; Pa—patella; SP—spur on mesal branch of conductor; TA—tegular apophysis. Scale bars=0.1mm.

Figure 46. Onomastus zhuwu Lin & Li, sp. nov., paratype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CD—copulatory duct; CO—copulatory opening; FD—fertilization duct; S—spermatheca. Scale bars=0.05mm.

Figure 49. Salticidae spp., dorsal view, holotype males (A, C, E) and paratype females (B, D, F), habitus. A–B. Coccorchestes spark Lin & Li, sp. nov.; C–D. Onomastus zhuwu Lin & Li, sp. nov. E–F. Synagelides huangxin Lin & Li, sp. nov. Scale bars=0.5mm.