Ectatosticta nyingchiensis, 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 : 531

Ectatosticta nyingchiensis sp. nov.

Figures 8A–C , 15D , 16D , 17E , 19

Type material. Holotype male (SWUC-T-HY-01-01), China, Tibet, Nyingchi City, Lulang Town , 29°49′08′′ N, 94°44′23′′ E, elev. 3087 m, 8 August 2020, L.Y. Wang, T. Yuan & Y.M. Hou leg. Paratypes: 7 females (SWUC-T- HY-01-02~08), with same data as holotype .

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

Diagnosis. The new species resembles E. yukuni Lin & Li, 2021 ( Figs 14A–C , 15K , 16K , 18F ) in having five strong setae on cymbial lobe and two pairs of spermathecae, but differs from the latter by the wide and short conductor base, the right-angled lower edge of the embolic base ( Figs 8A–C , 15D , 16D ), the short ventral spermathecae ( Fig. 17E ).

Description. Male holotype. Total length 14.09. Prosoma 6.27 long, 4.03 wide; Opisthosoma 7.97 long, 4.81 wide. Eye sizes and interdistances: AME 0.15, ALE 0.27, PME 0.32 PLE 0.30; AME–AME 0.20, AME–ALE 0.34, PME–PME 0.43, PME–PLE 0.19, ALE–PLE 0.05. MOA 0.48 long, front 0.52 wide, back width 0.98. Clypeus 0.44 high. Chelicerae with eight promarginal and five retromarginal teeth. Leg measurements: I 76.35 (20.26, 24.04, 21.01, 11.04); II 66.51 (17.97, 21.11, 18.75, 8.68); III 52.05 (15.08, 16.65, 14.32, 6.00); IV 63.76 (18.24, 19.52, 18.37, 7.63). Leg formula: 1243.

Male palp ( Figs 8A–C , 15D , 16D ). Cymbium long, retrolaterally with a small semicircular lobe and a large lobe bearing five strong setae. Embolus thin, its length slightly shorter than embolic base, basaly grooved. Conductor wide, sickle-shaped.

Female (One of paratypes). Total length 19.41. Prosoma 7.95 long, 4.81 wide; opisthosoma 10.94 long, 8.14 wide. Eye sizes and interdistances: AME 0.21, ALE 0.31, PME 0.37, PLE 0.31; AME–AME 0.21, AME–ALE 0.49, PME–PME 0.55, PME–PLE 0.26, ALE–PLE 0.06. MOA 0.60 long, front 0.66 wide, back width 1.22. Clypeus 0.63 high. Leg measurements: I 68.84 (19.18, 22.95, 17.84, 8.87); II 62.69 (17.38, 20.74, 16.68, 7.89); III 49.90 (14.83, 16.16, 13.14, 5.77); IV 58.36 (16.80, 18.08, 16.27, 7.21). Leg formula: 1243.

Female genitalia ( Fig. 17E ), with two pairs of spermathecae. Dorsal spermathecae small and short, longer than the half length of ventral spermathecae. Ventral spermathecae slight curved, whit a narrow base

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

Figures

FIGURE 8. Ectatosticta nyingchiensis sp. nov. male holotype. A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

FIGURE 14. Ectatosticta yukuni Lin & Li, 2021. A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

FIGURE 15. Embolus and conductor of Ectatosticta left male palp, retrolateral view. A. E. bajie Lin & Li, 2021; B. E. davidi (Simon, 1889); C. E. deltshevi Platnick & Jäger, 2009; D. E. nyingchiensis sp. nov.; E. E. pingwuensis sp. nov.; F–G. E. rulai Lin & Li, 2021 (F from Jiuzhaigou, G from Wanglang); H. E. shennongjiaensis sp. nov.; I. E. songpanensis sp. nov.; J. E. wukong Lin & Li, 2020; K. E. yukuni Lin & Li, 2021. Abbreviations: Co, conductor; Em, embolus.

FIGURE 16. Cymbium apophysis of Ectatosticta left male palp, prolateral view. A. E. bajie Lin & Li, 2021; B. E. davidi (Simon, 1889); C. E. deltshevi Platnick & Jäger, 2009; D. E. nyingchiensis sp. nov.; E. E. pingwuensis sp. nov.; F–G. E. rulai Lin & Li, 2021 (F from Jiuzhaigou, G from Wanglang); H. E. shennongjiaensis sp. nov.; I. E. songpanensis sp. nov.; J. E. wukong Lin & Li, 2020; K. E. yukuni Lin & Li, 2021. Abbreviations: CL, cymbial lobe; TS, thickened setae.

FIGURE 17. Female genitalia of Ectatosticta, dorsal view. A. E. bajie Lin & Li, 2021; B–C. E. davidi (Simon, 1889); D. E. deltshevi Platnick & Jäger, 2009; E. E. nyingchiensis sp. nov.; F. E. pingwuensis sp. nov.. Abbreviations: DS, dorsal spermathecae; VS, ventral spermathecae.

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.

FIGURE 19. Distribution records of Ectatosticta spp. in this study.