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Issue: Vol. 5866 No. 2: 11 Aug. 2026
Type: Article
Published: 2026-08-11
DOI: 10.11646/zootaxa.5866.2.4
Page range: 273-288
Abstract views: 273
PDF downloaded: 11

Two new species of the genus Hypogastrura Bourlet (Collembola: Hypogastruridae) from the Eastern Palaearctic

The Severtsov Institute of Ecology and Evolution; Russian Academy of Sciences; Moscow 119071; Russia
The Buketov Karaganda National Research University; Karaganda 100028; Kazakhstan
Collembola α-taxonomy monticola- & nivicola-groups taxonomic notes

Abstract

Two new species of the genus Hypogastrura Bourlet, H. salairi sp. nov. and H. karkaralensis sp. nov., are described from northeastern Altai and Kazakhstan, respectively. The former species belongs to the monticola‑group and is characterized by coarse dorsal granulation, a long mucro with low lateral lamellae, and minute anal spines. Despite a territorial disunity, this new species is morphologically closest to the Caucasian endemic H. hatiparae, differing from the latter primarily in its pronounced polychaetosis. The second new species, H. karkaralensis sp. nov., belongs to the nivicola‑group and differs from most other Asian representatives of this group in the shape of the ventral region of the dens, which lacks visible granulation. Unlike other similar taxa, this region in H. karkaralensis sp. nov. is narrow and does not form a noticeable swelling. A brief overview of the morphological variability of H. socialis in the Eastern Palaearctic is also given, and some comments on the taxonomic status of related species are made.

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How to Cite

Babenko, A. & Blyalova, Z. (2026) Two new species of the genus Hypogastrura Bourlet (Collembola: Hypogastruridae) from the Eastern Palaearctic. Zootaxa, 5866 (2), 273–288. https://doi.org/10.11646/zootaxa.5866.2.4