What question did this study set out to answer?

To document the species of aquatic and riparian beetles in the vicinity of Baskunchak Lake.

June 20, 2026

Materials to the Fauna of Aquatic and Riparian Beetles (Coleoptera) of Baskunchak Lake Vicinities (Astrakhan Oblast, Russia)

ASA. SazhnevGeologorazvedka (Russia)APA. Prokin

Key Points

To document the species of aquatic and riparian beetles in the vicinity of Baskunchak Lake.
Conducted field sampling to identify beetle species
Photographed main sampling sites and beetle characteristics
Recorded three species for the first time in Astrakhan Oblast
Identified 15 beetle species across different families
Three species recorded for the first time in the region: Berosus spinosus, Ochthebius schneideri orchymonti, Contacyphon laevipennis
Photographs of species' habitus and genitalia variability were provided

Abstract

A list of 15 coleopteran species is provided: Haliplidae — 1, Dytiscidae — 1, Hydrophilidae — 6, Hydraenidae — 3, Scirtidae — 1, Heteroceridae — 3. Three species are recorded from Astrakhan Oblast for the first time: Berosus spinosus (Steven, 1808) (Hydrophilidae), Ochthebius schneideri orchymonti Jäch, 1984 (Hydraenidae) and Contacyphon laevipennis (Tournier, 1868) (Scirtidae). The penultimate species is recorded outside the type locality for the first time. Photographs of the main sampling sites, habitus and male genitalia of Hydraenidae species are given. Photographs of Ochthebius joosti Jäch, 1992 aedeagus variability from different parts of the range are provided.

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