Sinodraconarius Z. Zhao & S. Li, 2018

Li, Bing, Zhao, Zhe, Zhang, Chuntian & Li, Shuqiang, 2018, Sinodraconarius gen. n., a new genus of Coelotinae spiders from Southwest China (Araneae, Agelenidae), ZooKeys 770, pp. 117-135 : 117

Genus Sinodraconarius Z. Zhao & S. Li gen. n.

Type species.

Sinodraconarius sangjiuensis Zhao & Li, sp. n.

Etymology.

The generic name is derived from its similarity to Draconarius and the Latin adjective Sino - for Chinese referring to the main distribution region of the genus. The gender is masculine.

Diagnosis.

The males of Sinodraconarius gen. n. are similar to those of Draconarius by having a patellar apophysis, two tibial apophyses (RTA and LTA) and a long median apophysis, but can be distinguished by the short cymbial furrow, less than 1/2 length of cymbium vs. long and generally more than 1/2 length of the cymbium in Draconarius ; patellar apophysis bifurcate vs. not bifurcate in Draconarius . The females of Sinodraconarius gen. n. are similar to those of Draconarius by having a small epigynal atrium, with epigynal hoods located laterally, and the copulatory openings located centrally on the epigyne plate, but can be distinguished by lacking epigynal teeth; receptacles simple.

Description.

Small to very large sized, with a total length of 6.90-17.60; body brownish to brown, with black setae. Carapace nearly pear-shaped, with longitudinal fovea and radial grooves; sternum brownish, heart-shaped. Abdomen nearly oval, grey to dark grey, with 4-5 grey chevron-like markings. Chelicerae with three promarginal and two retromarginal teeth. Leg formula (4> 1> 2> 3). Male palp with one bifurcate patellar apophysis; two tibial apophyses (RTA and LTA), RTA extending beyond the tibia; cymbial furrow short, less than 1/2 length of cymbium; conductor short, with dorsal conductor apophysis; the apex of conductor with small basal lamella; embolus short; median apophysis long, finger-like; tegulum broad. Tibia strongly bent and dorsal part of tibia and patella bent almost to a right angle, ventral part of tibia at 45° angle. Epigyne: with septum; teeth lacking; atrium small, length of atrium two times longer than width, heart-shaped; epigynal hoods located laterally; copulatory openings located centrally on epigynal plate; copulatory ducts short, extending mesad of receptacles; receptacles broad, widely separated.

Comments.

In addition to morphological study, we analyzed the relationships of coelotine spiders using eight genes from 286 species in 19 genera ( Zhao and Li 2017). The molecular topologies inferred by three different approaches all supported Sinodraconarius gen. n. as a monophyletic group that is closely related to Draconarius . For details, please see SD001, SD002, SD019, SD028 and ZZ300 (Southern Coelotes groups) in Figure 3 and supplementary figures S4-S6 of Zhao and Li (2017).

Distribution.

So far, the genus is known from Tibet and Yunnan, China (Fig. 11 ).

Figures

Figure 3. Left male palp of Sinodraconarius cawarongensis sp. n., holotype. A Prolateral view B Ventral view C Retrolateral view. Scale bar equal for A, B, C.

Figure 11. Localities of Sinodraconarius species in the Southwest China. 1 S. cawarongensis sp. n. 2 S. muruoensis sp. n. 3 S. patellabifidus 4 S. sangjiuensis sp. n. 5 S. yui sp. n.