Findings of B. unicornis A, B Germany, Bruchsal – Untergrombach, Michaelsberg and Habichtsbuckel Nature Reserve, 7.vii.2021 (photographs by Torsten Bittner) C, D Bulgaria, Dimovo env., 26.vi.2010 (photographs by Aleš Sedláček) E, F Bulgaria, Oreshak env., 6.vii.2020, (photographs by Maximilian Teodorescu).

 
 
  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