Microlinyphia rehaiensis, Irfan & Zhang & Peng, 2022

Irfan, Muhammad, Zhang, Zhi-Sheng & Peng, Xian-Jin, 2022, Survey of Linyphiidae (Arachnida: Araneae) spiders from Yunnan, China, Megataxa 8 (1), pp. 1-292 : 168-170

Microlinyphia rehaiensis sp. nov. (ēäḿƉƦ) Figures 197 , 198 , 201

Types. Holotype ♀, CHINA, Yunnan, Tengchong County, Qingshui Township, Rehai , 24.94861°N, 98.45181°E, alt. 1470m, 1 June 2006, Peng Hu leg. ( YHY17 ).

Etymology. This epithet derives from the type locality.

Diagnosis. The new species resembles Microlinyphia delesserti (Caporiacco, 1949) in having a similar scape ( Fig. 197A–C ; Helsdingen, 1970, figs 60, 61), but can be distinguished by the spiral tubes with 1.5 coils in M. rehaiensis sp. nov. ( Fig. 197A–C ), whereas the tubes directly enter in spermathecae in M. delesserti ( Helsdingen, 1970, fig. 61).

Description. Female (holotype, Fig. 198A, B ): Total length: 3.72. Carapace 1.55 long, 1.08 wide, yellowish brown; fovea, cervical and radial grooves distinct. Clypeus 0.17 high. Sternum longer than wide, yellowish brown, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae with four promarginal and six retromarginal teeth AER recurved, PER straight, slightly wider. Eye sizes and interdistances:AME 0.09, ALE 0.12, PME 0.09, PLE 0.10, AME–AME 0.05, PME–PME 0.06, AME– ALE, 0.03, PME–PLE 0.09, AME–PME 0.08, ALE–ALE 0.47, PLE–PLE 0.53, ALE–PLE contiguous. Length of legs: I 8.38 (2.24, 2.52, 2.34, 1.28), II 6.73 (1.88, 1.96, 1.85, 1.04), III 4.31 (1.45, 1.21, 0.96, 0.69), IV 6.07 (1.68, 1.76, 1.75, 0.88). Leg formula I-II-IV-III. Tm I 0.77 and Tm IV 0.38. Tibial spine formula: 2-2-2-2. Abdomen 2.17 long, 1.30 wide, oval, dorsally white, mid dorsally with a yellowish brown pattern; ventral side brown with a longitudinal white band.

Epigyne ( Fig. 197A–C ): Scape round posteriorly, curved in ventral direction, ventrally with a socket. In ventral view, epigynal plate densely covered with long, thick spines. Vulva: entrance of spiral tubes located mesally, quite visible in dorsal view of vulva. Spiral tubes with 1.5 coils. Turning points and spermathecae present anteriorly at the apex. Spermathecae small, pointing towards each other. Fertilization duct running through the axis of coils, present laterally.

Male. Unknown.

Distribution. Known only from the type locality

( Fig. 201 ).

Figures

FIGURE 197. Microlinyphia rehaiensis sp. nov., female holotype. A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 198. Microlinyphia rehaiensis sp. nov., female holotype. A Habitus, dorsal view B Habitus, ventral view.

FIGURE 201. Distribution of Microlinyphia species.