Nilsson, Anders. 1994. “Two New East Palearctic <i>Agabus</i> Species of the <i>adpressus-</i> and <i>confinis-</i>Groups (Coleoptera, Dytiscidae)”. Entomologica Fennica 5 (3):169-75. https://doi.org/10.33338/ef.83814.