Euochin mii, Wang & Li, 2022

Wang, Cheng & Li, Shuqiang, 2022, On eleven species of jumping spiders from Xishuangbanna, China (Araneae, Salticidae), ZooKeys 1116, pp. 85-119 : 85

Euochin mii sp. nov.

Figs 5 , 6

Type material.

Holotype ♂ (IZCAS-Ar42919), China: Yunnan: Xishuangbanna, Mengla County, Xiaolongha Village, Xishuangbanna National Nature Reserve, seasonal rainforest (21°24.24'N, 101°36.27'E, ca 710 m alt.), 17.xi.2013, Q. Zhao and Z. Chen leg. Paratypes 1♂6♀ (IZCAS-Ar42920-42926), same data as holotype; 1♂2♀ (IZCAS-Ar42927-42929), same locality and collectors, 21.xi.2013.

Etymology.

The species is named after Prof. Xiaoqi Mi, who helped us greatly with this research; noun (name) in genitive case.

Diagnosis.

Euochin mii sp. nov. resembles that of E. subwanyan (Wang & Li, 2020) from China in having a tapered embolus, straight retrolateral tibial apophysis and similarly sized, paired atria, but it differs by the following: 1) embolus forming a disc at base (Fig. 5C ) versus indistinct in E. subwanyan ( Wang and Li 2020a: fig. 5C), 2) copulatory ducts about 1/7 diameter of spermatheca and curved anteromedially (Fig. 5C ) versus about 1/4 diameter of spermatheca and twisted entirely in E. subwanyan ( Wang and Li 2020a: fig. 6C). The female also closely resembles E. luzonica Logunov, 2020 from Philippines in having thin copulatory ducts and large, spherical spermathecae, but it can be easily distinguished by the distance between the atrium and epigastric furrow, which is about 2/5 the spermathecal diameter (Fig. 6 ) but less than 1/10 the diameter in E. luzonica ( Logunov 2020: fig. 15).

Description.

Male (Figs 5 , 6C, D, F, G ). Total length 2.87. Carapace 1.64 long, 1.23 wide. Abdomen 1.28 long, 0.94 wide. Clypeus 0.08 high. Eye sizes and inter-distances: AME 0.39, ALE 0.27, PLE 0.22, AERW 1.26, PERW 1.09, EFL 0.72. Legs: I 3.73 (1.15, 1.43, 0.70, 0.45), II 2.91 (0.93, 1.00, 0.55, 0.43), III 3.41 (1.15, 1.05, 0.78, 0.43), IV 3.51 (1.10, 1.13, 0.85, 0.43). Carapace dark brown, with longitudinal, yellow area and dark radial lines on thorax, bearing dense, bilateral, white setae and sparse, golden, thin setae, denser at eye base. Fovea dark red, longitudinal. Chelicerae orange to dark brown, with two promarginal teeth and one retromarginal tooth. Endites orange to dark, white entally at tip, broadened distally. Labium almost linguiform, with several dark setae distally. Sternum dark brown, heart-shaped. Legs dark brown except middle 1/2 of metatarsi and tarsi pale or pale yellow. Abdomen suboval, dorsum rufous, dotted, with a subtrapeziform yellow patch at anterior margin, pair of transverse yellow stripes medially, two large, irregular, pale markings posteriorly; venter dark brown, with four dotted lines.

Palp (Fig. 5A-D ): tibia short, about 3 times wider than long in ventral view, with tapered, straight retrolateral tibial apophysis about 1.5 times longer than tibia; cymbium about 1.8 times longer than wide in ventral view; bulb swollen, with strongly curved sperm duct; embolus forming a disc at base, followed by tapered, knife-shaped portion, coiled into about 1/4 circle, and pointed apically.

Female (Fig. 6A, B, E ). Total length 3.15. Carapace 1.59 long, 1.18 wide. Abdomen 1.67 long, 1.28 wide. Clypeus 0.08 high. Eye sizes and inter-distances: AME 0.38, ALE 0.25, PLE 0.22, AERW 1.19, PERW 1.08, EFL 0.72. Legs: I 2.76 (0.88, 1.05, 0.48, 0.35), II 2.46 (0.75, 0.88, 0.48, 0.35), III 3.18 (1.03, 1.15, 0.65, 0.35), IV 3.21 (1.00, 1.08, 0.78, 0.35). Habitus similar to that of male except with pale yellow legs and a distinct inverted triangular, yellow area across entire surface of thorax.

Epigyne (Fig. 6A, B ): atria oval, paired; copulatory openings anteriorly located, close to each other; copulatory ducts thin, strongly curved before descending posteriorly to connect with median part of ental sides of spermathecae; spermathecae almost spherical, touching; fertilization ducts lamellar, transversely extending, originating from anterior portions of spermathecae.

Distribution.

Known only from the type locality in Yunnan, China.

Comments.

Wang and Li (2021) mentioned that the generic position of Euochin yaoi Wang & Li, 2021 may need further confirmation. This is true for the new species and the following one as well for the same reasons.

Figures

Figure 5. Euochin mii sp. nov., male holotype palp A prolateral B retrolateral C ventral D dorsal. Scale bars: 0.1.

Figure 6. Euochin mii sp. nov., male holotype and female paratype A epigyne, ventral B vulva, dorsal C male holotype habitus, dorsal D ditto, ventral E female paratype habitus, dorsal F holotype carapace, frontal G holotype chelicera, posterior. Scale bars: 0.1 (A, B, G); 0.5 (C-F).