Echinax baisha Lu & Li, 2023

Zhang, Lu & Zhang, Feng, 2023, Review of the genus Echinax Deeleman-Reinhold, 2001 from China (Araneae: Corinnidae), Zootaxa 5383 (1), pp. 39-56 : 43

Echinax baisha Lu & Li, 2023 （白沙NJu）

Figs 4–6 , 13

Echinax baisha Lu & Li , in Lu et al., 2023: 22 , figs 3A–C, 4A–B (♂).

Material examined: CHINA: 1♂ (MHUB-ARA-2011-2), Hainan Province, Cangjiang County, Bawang Mountains 30.Ⅴ.2011, leg. F. Zhang. 1♀ (HBUARA#2022-123), Hainan Province, Cangjiang County, Bawang Mountains, Baishi Tan scenic spot (19.131058°N, 109.056163°E, 739 m), 14.VII.2022, leg. L. Zhang.

Diagnosis: E. baisha is similar to E. oxyopoides and can be distinguished from it by: 1) the short, sickle-shaped embolus (vs long embolus in E. oxyopoides ) (cf. Figs 6A–C , 13E with Figs 9A–C , 13A ); 2) the slightly curved terminal part of embolus in retrolateral view (vs curved and C-shaped in E. oxyopoides ) (cf. Fig. 13H with Fig. 13B ); 3) posteriorly straight copulatory ducts (vs curved in E. oxyopoides ) (cf. Fig. 6E with Fig. 9E ).

Description. Male ( Figs 5A–B , 6A–C , 13E–F ). For a detailed description see Lu et al., 2023.

Female ( Fig. 5C–D ). TL 5.83; CL 2.65, CW 2.03; AL 3.23, AW 1.64. Eye sizes and interdistances: AME 0.16, ALE 0.10, PME 0.12, PLE 0.14; AME–AME 0.06, AME–ALE 0.03, ALE–ALE 0.42, PME–PME 0.16, PME– PLE 0.05, PLE–PLE 0.55, ALE–PLE 0.04; MOA 0.24 long, anterior width 0.32, posterior width 0.36. Clypeal height 0.22. LL 0.12, LW 0.31. SL 1.04, SW 0.96. Measurements of legs: I 8.62 (2.60, 0.81, 2.08, 2.15, 0.98), II 8.34 (2.46, 0.82, 2.00, 2.14, 0.92), III 8.18 (2.32, 0.82, 1.88, 2.19, 0.97), IV 10.00 (2.77, 0.85, 2.31, 3.01, 1.06). Carapace creamy, surface smooth; with radial marks, black feathery setae covering markings and dark marginal bands. Endites creamy, apical margin brown. Labium light brown; sternum creamy. Legs creamy, with half ring ventrally. Abdomen oval, creamy, with brown marks and small dorsal scutum.

Epigyne as in Fig. 6D–E . Copulatory openings situated laterally in epigastric plate, with arc-shaped edges ( Fig. 6D ). Copulatory ducts approximately long, longer than receptacle, C-shaped, anterior of copulatory ducts parallel to posterior ( Fig. 6D–E ). Spermathecae folded, with wrinkles, close to each other.

Distribution. China (Hainan).

Figures

FIGURE 4. Echinax baisha: A, D. Habitats; B–C. female.

FIGURE 5. Echinax baisha: A. male habitus, dorsal view; B. same, ventral view; C. female habitus, dorsal view; D. same, ventral view. Scale bars: 1 mm.

FIGURE 6. Echinax baisha: A. male left palp, prolateral view; B. same, ventral view; C. same, retrolateral view; D. epigyne, ventral view; E. vulva, dorsal view. Abbreviations: E—embolus; T—tegulum; ST I—spermatheca I (posterior); ST II— spermatheca II (anterior); SD—sperm duct; CO—copulatory opening; CD—copulatory duct; FD—fertilization duct. Scale bars: 0.2 mm (A–C); 0.1 mm (D–E).

FIGURE 9. Echinax oxyopoides: A. male left palp, prolateral view; B. same, ventral view; C. same, retrolateral view; D. epigyne, ventral view; E. vulva, dorsal view. Abbreviations: E—embolus; T—tegulum; ST I—spermatheca I (posterior); ST II—spermatheca II (anterior); SD—sperm duct; CO—copulatory opening; CD—copulatory duct; FD—fertilization duct. Scale bars: 0.2 mm (A–C); 0.1 mm (D–E).

FIGURE 13. Embolus structure of Chinese Echinax species: A–B. Echinax oxyopoides; C–D. Echinax panache; E–F. Echinax baisha; G–H. Echinax breviducta sp. nov.; A, C, E, G ventral view; B, D, F, H retrolateral view. Scale bars: 0.1 mm.