Platnickina obscuratum (Zhu, 1998) comb. nov.

Figs 4, 5, 6

Theridion obscuratum Zhu 1998: 167, fig. 105 A – D ( holotype: female, China, Hubei Province: Enshi Tujia and Miao Autonomous Prefecture, Xuan’en County; 29.90°N, 109.40°E; 26 May 1989; Mingsheng Zhu leg.; deposited in the Museum of Hebei University, Hebei University, not examined ); Song et al. 1999: 138, fig. 77 G – H (female); Zhang and Jin 2016: 620, figs 1 a – b, 2 a – e, 3 a – d (male, female); Zhou et al. 2024: 3, fig. 3 A – D (male).

Material examined.

China – Hubei Province • 2 males, 3 females (QZMS 02345, 04256, 04257, 04259, 04260); Enshi Tujia and Miao Autonomous Prefecture, Xuan’en County, Qizimeishan National Nature Reserve, Shadaogou Town; 29.6845 – 29.9238°N, 109.6680 – 109.7360°E; elev. 685–843 m; 21–24 July 2023; Changhao Hu and Mian Wei leg. – Guangdong Province • 2 females (PWGD 2024001, 2024002); Meizhou City, Pingyuan County; 24.8707°N, 115.9361°E; elev. 261 m; 11 July 2024; Chao Liu, Hailun Chen, Jingwei Kang and Yunhe Wang leg. – Guizhou Province • 1 female (PWGZ 2024001); Bijie City, Jinsha County; 27.5456°N, 105.9750°E; elev. 826 m; 10 September 2024; Chao Liu, Guolong Huang, Hailun Chen and Yunhe Wang leg. – Hunan Province • 1 female (PWHN 2024001); Changsha City, Ningxiang City, Shibasi; 40.0279°N, 112.7215°E; elev. 79 m; 15 August 2024; Chao Liu, Hailun Chen, Jingwei Kang and Yunhe Wang leg.

Diagnosis and description.

See Zhang and Jin (2016).

Remarks.

Although the male of this species possesses an unusual embolus (with a trapezoidal base and thin tip vs cow-horn-shaped in most other Platnickina species), the bowl-shaped subtegulum, trapezoidal tegulum, rounded ventral part of the median apophysis, pointed tegular apophysis, and black flecks on the dorsal opisthosoma are consistent with the characteristics of Platnickina (Figs 4, 5). In addition, the female has an epigynal atrium, which is diagnostic of the genus (Fig. 5). Therefore, we propose transferring this species to Platnickina .

Distribution.

China (Fujian, Guangdong, Guizhou, Hubei, Hunan).