Molestia ancorarius, 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 : 174

Molestia ancorarius sp. nov. (ÜḦĢƦ)

Figures 202 , 203 , 212

Types. Holotype ♀, CHINA, Yunnan, Gongshan County, Gongshan to Qiqi , 27.77072°N, 98.65333°E, alt. 1564m, 25 September 2002, Heng-mei Yan leg. (Yan020925).

Etymology. This epithet derives from the Latin adjective “ ancorarius ”, meaning “anchor” and referring to the anchor-shaped pseudoscape in epigyne.

Diagnosis. The new species can be distinguished from all other congeners by having the anchor-shaped scape in epigyne ( Fig. 202A–C ).

Description. Female (holotype, Fig. 203A, B ): Total length: 1.95, Carapace 0.73 long, 0.61 wide; cephalic region slightly elevated, brown; fovea, cervical and radial grooves distinct. Clypeus 0.13 high. Sternum wider than long, brown, sparsely covered with microsetae. Labium wider than long. Maxillae long, distal end broad with scopulae. Chelicerae with four promarginal and three retromarginal teeth. Eye region narrow, AER recurved, PER straight and slightly wider than AER. Eye sizes and interdistances: AME 0.04, ALE 0.07, PME 0.07, PLE 0.07, AME–AME 0.03, PME–PME 0.04, AME–ALE, 0.05, PME–PLE 0.04, AME–PME 0.06, ALE–ALE 0.29, PLE–PLE 0.32 ALE–PLE contiguous. Length of legs: I 3.09 (0.87, 1.02, 0.72, 0.48), II 2.74 (0.82, 0.85, 0.66, 0.41), III 2.22 (0.66, 0.64, 0.54, 0.38), IV 2.91 (0.83, 0.89, 0.69, 0.50). Leg formula I-IV-II-III. Tm I 0.38 and Tm IV 0.32. Tibial spine formula: 2-2-2-2. Abdomen 1.22 long, 0.94 wide, oval, dorsally with distinct greenish-grey patterns from the anterior margin to the base of spinnerets; ventral side greenish-grey.

Epigyne ( Fig. 202A–C ): Protruding, scape anchorshaped, with small stretcher; entrance groove inside lateral pockets; posterior median plate broad, rectangular; spermathecae long, directed anteriolaterally, away from each other.

Male. Unknown.

Distribution. Known only from the type locality ( Fig. 212 ).

Figures

FIGURE 202. Molestia ancorarius sp. nov., female holotype. A, B Epigyne, ventral view C Vulva, dorsal view.

FIGURE 203. Molestia ancorarius sp. nov., female holotype. A Habitus, dorsal view B Habitus, ventral view.

FIGURE 212. Distribution of Molestia species.