Simaetha pengi, Wang & Li, 2020

Wang, Cheng & Li, Shuqiang, 2020, Seven new species of jumping spiders (Araneae, Salticidae) from Xishuangbanna, China, ZooKeys 968, pp. 43-69 : 43

Simaetha pengi sp. nov. Figs 13 , 14

Type material.

Holotype ♂ (IZCAS-Ar40625), China: Yunnan: Xishuangbanna, Mengla County, Menglun Town, Menglun Nature Reserve, Leprosy Village (21°53.62'N, 101°18.25'E, ca 520 m), 29.04.2019, Y. Tong et al. leg. Paratypes 2♀ (IZCAS-Ar40626-40627), same data as holotype.

Etymology.

The specific name is a patronym in honor of Prof. Xianjin Peng (Changsha, China), who has produced many important taxonomic works on Chinese jumping spiders; noun (name) in genitive case.

Diagnosis.

Simaetha pengi sp. nov. resembles S. gongi Peng, Gong & Kim, 2000 but can be distinguished by the apically curved embolus (vs straight), the longer than wide epigynal hood (vs wide than long), and the bifurcated retromarginal tooth of the female chelicerae (vs not bifurcated). The male of S. menglun sp. nov. also somewhat resembles S. deelemanae Zhang, Song & Li, 2003 in the shape of the palp but can be easily distinguished by the short palpal tibia, which is wider than long, but distinctly longer than wide in S. deelemanae .

Description.

Male (Figs 13 , 14C, D, F, G ). Total length 2.17. Carapace 1.15 long, 1.11 wide. Abdomen 1.11 long, 1.01 wide. Clypeus 0.02 high. Eye sizes and inter-distances: AME 0.28, ALE 0.14, PLE 0.13, AERW 0.93, PERW 0.97, EFL 0.62. Legs: I 2.39 (0.78, 1.00, 0.34, 0.27), II 1.80 (0.56, 0.63, 0.34, 0.27), III 1.66 (0.51, 0.54, 0.34, 0.27), IV 2.00 (0.68, 0.71, 0.32, 0.29). Carapace almost square, red-brown, with a pair of indistinct dark brown patches medially on cephalic part, bearing dense, white setae forming two parallel transverse stripes on cheeks and golden-brown setae, two clusters of white setae near the PMEs on the dorsum. Clypeus dark brown. Fovea indistinct. Chelicerae red-brown, with two promarginal teeth and one retromarginal, pillar-shaped tooth bifurcated distally, with additional digitiform and round protuberances at the promargin and retromargin, respectively. Endites and labium colored as chelicerae. Sternum darker than endites, covered with pale, thin setae. Legs I with inflated, dark femora and tibiae, the latter bearing dense ventral setae, patellae yellow, tarsus pale yellow; other legs yellow with dark rings, except femora dark brown. Abdomen oval, dorsum dark medially, with spots of yellow scales anterolaterally and a yellow longitudinal band of scales posteriorly; venter brown.

Palp (Fig. 13A-D ): tibia almost as long as wide, with transparent white scales dorsally, and a RTA less than tibial length, tapered to a slightly pointed tip, directed towards 1:00 o’clock in retrolateral view; cymbium hirsute, with a proximo-retrolateral triangular process and sparse, transparent white scales proximo-dorsally; bulb flat, with sperm duct extending along the margin; embolus arises from a plate-like base, superimposed on the surface of the bulb, slightly curved apically.

Female (Fig. 14A, B, E, H ). Total length 2.48. Carapace 1.10 long, 1.03 wide. Abdomen 1.40 long, 1.13 wide. Clypeus 0.02 high. Eye sizes and inter-distances: AME 0.26, ALE 0.12, PLE 0.12, AERW 0.86, PERW 1.01, EFL 0.59. Legs: I 1.98 (0.71, 0.76, 0.27, 0.24), II 1.64 (0.54, 0.59, 0.27, 0.24), III 1.53 (0.49, 0.51, 0.29, 0.24), IV 2.03 (0.71, 0.73, 0.32, 0.27). Habitus similar to that of male, except paler, and the chelicerae have one promarginal tooth and one retromarginal fissident with three cusps.

Epigyne (Fig. 14A, B ): wider than long, with an anterior bell-shaped hood approximately 1.5 times longer than wide; copulatory openings slit-like, located medially, separated from each other by approximately 1.5 times the width of the hood; copulatory ducts short; spermathecae divided into two round chambers; fertilization ducts connected to the anterior part of the posterior chambers of the spermathecae.

Distribution.

Known only from the type locality in Yunnan, China.

Figures

Figure 13. Male palp of the holotype of Simaetha pengi sp. nov. A prolateral B retrolateral C ventral D dorsal. Scale bars: 0.1.

Figure 14. Simaetha pengi sp. nov., female paratype and male holotype A epigyne, ventral B vulva, dorsal C holotype habitus, dorsal D holotype habitus, ventral E paratype habitus, dorsal F holotype carapace, frontal G holotype chelicerae, dorsal H paratype chelicerae, dorsal. Scale bars: 0.1 (A, B, G, H); 0.5 (C-F).