Ectatosticta songpanensis, Wang & Zhao & Irfan & Zhang, 2021

Wang, Lu-Yu, Zhao, Jing-Xia, Irfan, Muhammad & Zhang, Zhi-Sheng, 2021, Review of the spider genus Ectatosticta Simon, 1892 (Araneae: Hypochilidae) with description of four new species from China, Zootaxa 5016 (4), pp. 523-542 : 535-536

Ectatosticta songpanensis sp. nov.

Figures 3D–F , 12A–C , 15I, 16I, 18C , 19

Type material. Holotype male (SWUC-T-HY-04-01), China, Sichuan Province, Songpan County, Shanba Township , 32°47′12″ N, 103°42′29″ E, elev. 3276 m, 15 October 2020, Y. Zhang, L.Y. Wang, J.X. Zhao and J.S. Luo leg. Paratypes: 10 males and 7 females (SWUC-T-HY-04-02~18), with same data as holotype ; 1 female (SWUC-T-HY- 04-19), China, Sichuan Province, Songpan County, Chuanzhusi Town , 32°47′57″ N, 103°34′24″ E, elev. 3000 m, 14 October 2020, L.Y. Wang, Y. Zhang, J.X. Zhao and J.S. Luo leg.

Etymology. The specific name is derived from the type locality; noun in apposition.

Diagnosis. The male of this new species resembles E. wukong Lin & Li, 2020 ( Figs 13A–C, 15J, 16J), in having three strong setae on cymbial lobe retrolaterally, but differs from the latter by the narrow conductor ( Figs 12A–C , 15I, 16I). The female of this new species resembles E. yukuni Lin & Li, 2021 ( Fig. 18F ) in having two pairs of spermathecae, ventral spermathecae long and dorsal spermathecae short, but differs from the latter by the slightly thicker ventral spermathecae and longer dorsal spermathecae ( Fig. 18C ).

Description. Male holotype ( Fig. 3D ). Total length 13.17. Prosoma 6.26 long, 3.97 wide; Opisthosoma 6.83 long, 4.00 wide. Eye sizes and interdistances: AME 0.25, ALE 0.33, PME 0.31, PLE 0.37; AME–AME 0.20, AME– ALE 0.30, PME–PME 0.42, PME–PLE 0.21, ALE–PLE 0.08. MOA 0.62 long, front 0.61 wide, back width 0.94.

Clypeus 0.47 high. Chelicerae with eight promarginal and six retromarginal teeth. Leg measurements: I 57.61 (15.13, 18.61, 14.62, 9.25); II 49.45 (13.27, 16.05, 12.58, 7.55); III 38.00 (11.06, 12.35, 9.45, 5.14); IV 48.59 (13.91, 15.14, 12.82, 6.72). Leg formula: 1243.

Male palp ( Figs 12A–C , 15I, 16I). Cymbium long, retrolaterally with a small semicircular lobe and a large lobe bearing three setae (two strong, one thin). Embolus thin, length ratio of embolus to embolic base slightly longer, basely grooved. Conductor long, sickle-shaped.

Female (one of paratypes, Fig. 3F ). Total length 16.26. Prosoma 6.68 long, 4.49 wide; opisthosoma 9.35 long, 7.76 wide. Eye sizes and interdistances: AME 0.24, ALE 0.36, PME 0.33, PLE 0.35; AME–AME 0.21, AME–ALE 0.34, PME–PME 0.42, PME–PLE 0.22, ALE–PLE 0.09. MOA 0.57 long, front 0.65 wide, back width 1.03. Clypeus 0.49 high. Leg measurements: I 42.69 (12.40, 15.13, 9.83, 5.33); II 38.26 (10.92, 12.57, 9.83, 4.94); III 28.55 (8.73, 9.48, 6.67, 3.67); IV 35.46 (10.44, 11.60, 8.79, 4.63). Leg formula: 1243.

Female genitalia ( Fig. 18C ) with two pairs of spermathecae. Dorsal spermathecae small and short, ventral spermathecae arc-shaped and three times the length of dorsal spermathecae.

Distribution. Known only from the type locality, Sichuan, China ( Fig. 19).

Figures

FIGURE 3. Photos of living specimens of Ectatosticta. A. E. pingwuensis, male holotype; B–C. E. shennongjiaensis (B, male holotype; C, female paratype); D–F. E. songpanensis (D, male holotype; E–F, female paratype; D–E from Shanba Township; F from Chuanzhusi Town).

FIGURE 12. Ectatosticta songpanensis sp. nov. male holotype. A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

FIGURE 18. Female genitalia of Ectatosticta, dorsal view. A. E. rulai Lin & Li, 2021; B. E. shennongjiaensis sp. nov.; C. E. songpanensis sp. nov.; D. E. wukong Lin & Li, 2020; E. E. xuanzang Lin & Li, 2020; F. E. yukuni Lin & Li, 2021. Abbreviations: DS, dorsal spermathecae; VS, ventral spermathecae.