Distribution of Bolbelasmus unicornis (yellow circles = records before 1950, orange circles = records between 1950–1999, red circles = records after 1999).

 
 
  Part of: Juřena D (2023) Addenda and corrigenda: 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. ZooKeys 1148: 209-227. https://doi.org/10.3897/zookeys.1148.100501