An unusually complex venom system in araneophagous palp-footed spiders (Palpimanidae)

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  An unusually complex venom system in araneophagous palp-footed spiders (Palpimanidae) Venoms are key adaptive traits in many animal lineages, yet their structural and functional diversity in spiders remains poorly investigated. Here, we present an initial characterization of the venom system of palp-footed spiders (Palpimanidae), a family specialized in hunting other spiders. Using micro-computed tomography, we found that the venom glands of the single species examined, Palpimanus gibbulus , exhibit a complex, multi-lobed morphology that is unusual among araneomorph spiders. Proteo-transcriptomic analyses of two Palpimanus venoms ( P. gibbulus and P. cyprius ) revealed highly diverse putative toxin repertoires comprising hundreds of peptides and proteins, including numerous novel putative neurotoxins, cytotoxins, enzymes, and allergens. Five major families of cysteine-rich palpitoxins were identified as the dominant putative neurotoxic components in both species, displaying con...

Expanding the horizon: Discovery of two new spider species of the Pholcus phungiformes species group (Araneae, Pholcidae) from Inner Mongolia, China, with a new western record for the group

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Expanding the horizon: Discovery of two new spider species of the Pholcus phungiformes species group (Araneae, Pholcidae) from Inner Mongolia, China, with a new western record for the group

Abstract

The spiders of the Pholcus phungiformes species group are primarily distributed across five mountain ranges in East Asia: the Lüliang Mountains and the Yanshan-Taihang Mountains in North China, the transitional uplands between the Yanshan-Taihang and Changbai Mountains, the Changbai Mountains straddling the China-North Korea border, and the Taebaek-Sobaek Mountains on the Korean Peninsula. In this study, we report the first records of this group from Inner Mongolia, northern China, describing two new species: Pholcus alashan Wang & Yao, sp. nov. (♂♀, from Alashan Zuoqi) and P. chifeng Yan & Yao, sp. nov. (♂♀, from Chifeng). The discovery of P. alashan sp. nov. extends the group’s western distribution limit by 5.2° longitude (from c. 111.0°E to 105.8°E), representing a significant zoogeographic range expansion.

Yan M, Liu Y, Wang L, Yao Z (2026) Expanding the horizon: Discovery of two new spider species of the Pholcus phungiformes species group (Araneae, Pholcidae) from Inner Mongolia, China, with a new western record for the group. ZooKeys 1275: 333-343. https://doi.org/10.3897/zookeys.1275.186998