Chrosiothes pengqi Lin & Li, 2024

Lin, Yejie, Li, Shuqiang, Mo, Haolin & Wang, Xihao, 2024, Thirty-eight spider species (Arachnida: Araneae) from China, Indonesia, Japan and Vietnam, Zoological Systematics 49 (1), pp. 4-98 : 70-71

Chrosiothes pengqi Lin & Li , sp. nov. ( Figs 61 , 72A )

Etymology. This species is named after Peng Qi, a character in the classic Chinese novel Outlaws of the Marsh; noun in apposition.

Diagnosis. The female of the new species can be distinguished from congeners by having a scape and the copulatory ducts shorter than the spermathecae (vs. scape absent and copulatory ducts longer than spermathecae.

Description. Female (holotype). Total length 1.68, carapace 0.48 long, 0.86 wide, opisthosoma 1.23 long, 0.86 wide. Eye sizes and interdistances: AME 0.04, ALE 0.03, PME 0.04, PLE 0.03, AME–AME 0.01, AME–ALE 0.02, PME–PME 0.02, PME–PLE 0.02, AME–PME 0.04, ALE–PLE 0. Chelicerae with 2 promarginal and 1 retromarginal teeth. Leg measurements: I 1.81 (0.43, 0.58, 0.46, 0.34), II 1.92 (0.54, 0.56, 0.49, 0.33), III 1.67 (0.48, 0.47, 0.40, 0.32), IV 2.10 (0.59, 0.64, 0.52, 0.35).

Coloration ( Fig. 72A ). Carapace dark brown, darker medially, without pattern. Chelicerae, labium dark brown. Sternum dark brown with white setae. Legs pale white, with dense setae. Opisthosoma conical, surface with sparse long setae on semiglobular bases.

Epigyne ( Fig. 61 ). Scape obvious. Copulatory openings inconspicuous. Copulatory ducts shorter than spermathecae. Spermathecae oblong. Fertilization duct directed at 12:00-o’clock-position from spermatheca.

Male. Unknown.

Material examined. Holotype ♀ (IZCAS-Ar44876), China: Chongqing, Chengkou Co., 26.VI.2023, Yuyang Zhou leg.

Distribution. Known only from the type locality.

Figures

Figure 61. Chrosiothes pengqi Lin & Li, sp. nov., holotype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: CD—copulatory duct; CO—copulatory opening; FD—fertilization duct; S—spermatheca; SC—scape. Scale bars=0.05mm.

Figure 72. Theridiidae spp., dorsal view, holotype (A, B, D, F) and paratype (C, E), habitus.A. Chrosiothes pengqi Lin & Li, sp. nov., female; B, C. Coscinida hantao Lin & Li, sp. nov., male and female; D, E. Gushangzao shiqian Lin & Li, sp. nov., male and female; F. Gyro zeppeli Lin & Li, sp. nov., female. Scale bars: A–E =0.3 mm; F=0.2mm.