A critical review of the distribution of the endangered European earth-borer beetle Bolbelasmus unicornis (Coleoptera, Geotrupidae), with new records from 13 countries and observations on its bionomy


	Tunelna Balka tract (Ukraine), locality with abundant occurrence of B. unicornis A–D views of the site (photographs by Oleksandr O. Sukhenko) E, F burrows dug by adults of B. unicornis with push-ups (photographs by Oleksandr O. Sukhenko).

Part of: Juřena D (2022) A critical review of the distribution of the endangered European earth-borer beetle Bolbelasmus unicornis (Coleoptera, Geotrupidae), with new records from 13 countries and observations on its bionomy. ZooKeys 1105: 1-125. https://doi.org/10.3897/zookeys.1105.81474