Eutittha hainanensis sp. n.

(Figures 8, 9)

Type material

Holotype. ♀, CHINA, Hainan, Ledong County, Jianfengling Nature Reserve, 15 December 2003, Mingsheng Zhu leg.

Etymology

The species name is a toponym in apposition referring to the type locality.

Diagnosis

This species (Figure 8b–c) resembles E. submordax (Zhang, Zhu and Hu, 1993) (Zhang et al. 1993, p. 106, fig. 2), E. brevicalcarata (L. Koch, 1873) (Deeleman-Reinhold 2001, p. 231, fig. 285), E. mordax (L. Koch, 1866) (Dondale 1966, p. 1178, fig. 6I; Hidaka 2022, p. 173, fig. 16) and E. stratiotica (L. Koch, 1873) (Forste 1979, p. 92, figs. 355–356) in having dumbbell-shaped spermathecae, but can be distinguished by the number of coils of copulatory ducts (2 spiral coils in E. hainanensis, vs 4 coils in E. brevicalcarata and E. submordax, 3 coils in E. mordax and E. stratiotica).

Description

Female (holotype). (Figure 8a) Total length 7.61: carapace length 3.57, width 2.51; abdomen length 4.04, width 1.79. Carapace orange-yellow, with indistinct radial striaes. All eyes with black rings, AER and PER slightly recurved, PER slightly wider than AER in dorsal view. Eye sizes and interdistances: AME 0.18, ALE 0.15, PME 0.15, PLE 0.13; AME– AME 0.38, AME–ALE 0.18, PME–PME 0.30, PME–PLE 0.24; MOA 0.55 long, front width 0.71, back width 0.62. Chelicerae reddish brown, with 3 promarginal and 2 retromarginal teeth, with dense scopula in both margins. Sternum pale yellow. Labium and endites yellowish brown, anterior edge with clearly scopula. Legs pale yellow, without distinct markings. Leg measurements: I 21.14 (3.85, 1.15, 4.76, 7.30, 4.08), II 12.84 (3.51, 1.14, 3.61, 3.52, 1.06), III 11.11 (3.14, 0.94, 2.44, 3.55, 1.04), IV 14.80 (3.67, 1.14, 4.33, 4.03, 1.60). Abdomen longitudinal ovoid, dorsally with a pale yellow medial longitudinal band enclosed by 2 white wide bands, terminal part with a diamond-shaped yellow band.

Epigyne. (Figure 8b–c) Atrium ca. 1.3 times wider than long, atrial anterior margin archshaped and heavily sclerotised, posterior margin inconspicuous; 2 copulatory openings located at postero-lateral margins of atrium; part of dark copulatory duct and spermathecae visible through tegument of epigynal plate in ventral view; spermathecae constricted in the middle, dumbbell-shaped, connected with simple spiral-coiled copulatory duct (each ascending portion of copulatory duct coils forming 2 entwined loops and then descending into the spermatheca).

Male. Unknown.

Distribution

Presently known from the type locality only, Hainan, China .