Ectatosticta Simon, 1892

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 : 525-526

Genus Ectatosticta Simon, 1892

Type species. Hypochilus davidi Simon, 1889 . Diagnosis. Ectatosticta can be distinguished from Hypochilus by the rectangular labium almost as long as wide and with a pair of triangular posterolateral flanges (other than wider than long, rebordered, simple), by numerous leg spines (other than spines absent or few) and by the very elongate male palp which cymbium nearly three times as long as the bulb (other than cymbium and bulb equal in length) ( Forster et al. 1987; Lin & Li 2020).

Description of genitalia. Male palp with an extremely elongated cymbium. Genital bulb originated on the fossa located in the distal end of cymbium ( Figs 5–15 ). Two lobes located on the cymbial distal margin retrolaterally. The small lobe near the ventral side, semicircular or triangular, with a single seta or without. The large lobe close to the dorsal side, with at least a strong, thickened, closely appressed setae. There are also some other strong setae on the subdistal end of cymbium retrolaterally ( Fig. 16 ). Embolus and conductor located on the genital bulb apically. Embolus thin, relatively long and arc-curved, with a wide base. Conductor lamellar, slightly clockwise curved, holding the apical part of embolus. The bases of embolus and conductor combined together.

Figures

FIGURE 5. Ectatosticta bajie Lin & Li, 2021. A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

FIGURE 6. Ectatosticta davidi (Simon, 1889). A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view. Abbreviations: CL, cymbial lobe; Co, conductor; Em, embolus; TS, thickened setae.

FIGURE 7. Ectatosticta deltshevi Platnick & Jäger, 2009.A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

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

FIGURE 10. Ectatosticta rulai Lin & Li, 2021. A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

FIGURE 11. Ectatosticta shennongjiaensis sp. nov. male holotype.A. Left male palp, apex of tarsus with bulb, prolateral view; B. Same, ventral view; C. Same, retrolateral view.

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 13. Ectatosticta wukong Lin & Li, 2020. 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.