The first genus with four sac-like structures in the vulva in the cobweb spider subfamily Theridiinae Sundevall, 1833 (Araneae: Theridiidae)

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  The first genus with four sac-like structures in the vulva in the cobweb spider subfamily Theridiinae Sundevall, 1833 (Araneae: Theridiidae) Abstract The morphological characters of copulatory organs are the most important basis in spiders for identification. In theridiids, a vulva with four sac-like structures is mostly associated with the subfamily Hadrotarsinae but has never been recorded in Theridiinae. Based on specimens collected from subtropical forest canopies in China, a new Theridiinae genus that has four sac-like structures in the vulva is described: Sactheridion gen. nov., with the type species S. chuan gen. & sp. nov. from Sichuan Province, China. Photos, diagnosis, description, and a distribution map of the new genus and new species are provided. Hu, C., Yao, Z., Liu, J. & Xu, X. (2026) The first genus with four sac-like structures in the vulva in the cobweb spider subfamily Theridiinae Sundevall, 1833 (Araneae: Theridiidae). Zootaxa, 5884 (1), 167–175. http...

A new species of the genus Allomicythus, with a first record and the description of the male of Echemus viveki Gajbe, 1989 (Araneae, Gnaphosidae) from China

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A new species of the genus Allomicythus, with a first record and the description of the male of Echemus viveki Gajbe, 1989 (Araneae, Gnaphosidae) from China

Abstract

Two species of the spider family Gnaphosidae are reported from China. A new species of the genus Allomicythus Ono, 2009 is described from Fujian province, Allomicythus youzi sp. nov. (♂). The genus Echemus Simon, 1878 is recorded for the first time from China. The male of Echemus viveki Gajbe, 1989 is described for the first time and the female is redescribed. Detailed morphological descriptions, photographs, SEMs of the body and genitalia, and a distribution map of these two species are provided.

Jiang, Z., Ning, X., Yao, Y., Wang, Z. & Liu, K. (2025) A new species of the genus Allomicythus, with a first record and the description of the male of Echemus viveki Gajbe, 1989 (Araneae, Gnaphosidae) from China. Zootaxa, 5646 (1), 115–123. https://doi.org/10.11646/zootaxa.5646.1.6