Spinirta qishuoi Lin & Li, 2023

Lin, Yejie, Li, Shuqiang & Pham, Dinh-Sac, 2023, Taxonomic notes on some spider species (Arachnida: Araneae) from China and Vietnam, Zoological Systematics 48 (1), pp. 1-99 : 6

Spinirta qishuoi Lin & Li , sp. nov. ( Figs 3–4 )

Etymology. The species is named after Mr. Shuo Qi, the collector of the holotype and paratypes; noun (name) in genitive case.

Diagnosis. The new species is similar to S. leigongshanensis Jin & Zhang, 2020 by having an extremely enlarged atrium, but it can be distinguished by the atrium being longer than wide, and the copulatory ducts merge with each other (vs. length and width are equal and copulatory ducts are separated in S. leigongshanensis ).

Description. Female (holotype). Total length 12.01; carapace 5.01 long, 3.89 wide, opisthosoma 7.00 long, 3.74 wide. Eye sizes and interdistances: AME 0.27, ALE 0.23, PME 0.23, PLE 0.25, AME–AME 0.21, AME–ALE 0.19, PME–PME 0.34, PME–PLE 0.35, AME–PME 0.23, ALE–PLE 0.30. Chelicerae with three promarginal and five retromarginal teeth. Leg measurements: I 14.14 (4.05, 5.05, 3.23, 1.81), II 13.63 (4.01, 4.72, 3.14, 1.76), III 11.83 (3.51, 3.85, 2.93, 1.54), IV 15.96 (4.46, 5.42, 4.45, 1.63). Leg spination: I tibia 4-4v, metatarsus 2-2v; II tibia 4-4v, metatarsus 2-2v; III tibia 2-2v, metatarsus 3-3v; IV tibia 2-2v, metatarsus 3-3v.

Coloration ( Fig. 4 ). Carapace black, covered with white setae. Chelicerae black. Endites and labium dark brown. Sternum brown. Legs red-brown with black setae. Opisthosoma oval, dark brown, dorsum with two irregular white spots, laterally brown, ventrum brown. Spinnerets short, brown.

Epigyne ( Fig. 3 ). Atrium longer than wide. Copulatory ducts heavily sclerotized, close together, wider than long. Glandular appendage located at middle of copulatory ducts. Spermathecae oval. Fertilization ducts directed at clock 1:00 position from spermathecae.

Male. Unknown.

Material examined. Holotype ♀ (IZCAS-Ar43828), China: Guangxi, Nanning City, Wuming District , Daming Mount. (23.5130°N, 108.4414°E, elev. 1235 m), 20 April 2020, Shuo Qi leg. Paratypes. 2♀ (IZCAS-Ar43829, Ar43830), same data as holotype .

Distribution. Known only from the type locality.

Figures

Figure 3. Spinirta qishuoi Lin & Li, sp. nov., holotype female. A. Epigyne, ventral view; B. Vulva, dorsal view. Abbreviations: A—atrium; CD—copulatory duct; CO—copulatory opening; FD—fertilization duct; GA—glandular appendage; S—spermatheca. Scale bars=0.1mm.

Figure 4. Spinirta qishuoi Lin & Li, sp. nov., holotype female, habitus. A. Dorsal view; B. Ventral view. Scale bars=2.0mm.