Reference
Manfred A. Jäch, Juan Angel Diaz (2017): New and little known Palearctic species of the genus Hydraena (s.l.) KUGELANN, 1794 XII. Description of a new species of the H. saga complex from Italy (Coleoptera: Hydraenidae) – Koleopterologische Rundschau – 87_2017: 37 - 50.