M. Trizzino, L. Carnevali, S. De Felici & Paolo Audisio (2013) A revision of Hydraena species of the " Haenydra " lineage (Coleoptera, Hydraenidae). Zootaxa , 3607 (1), 001–173.

1)Page 6: Fig. 2a depicts Hydraena solarii habitus, and NOT Hydraena bensae . 2)Page 11: Hydraena septentrionalis Pretner 1931 is synonym of Hydraena saga and NOT of Hydraena alpicola . 3)Page 12: Hydraena crassipes Mulsant 1844 is synonym of Hydraena dentipes and NOT of Hydraena gracilis . 4)Page 12: The correct name is H. excisa ssp. exclusa d’Orchymont 1931 and not " esclusa ". 5)In the dichotomous key section: - H. emarginata is found also in Cantabrian Mountains (as correctly reported in Fig. 27); - H. tatii is found also in Jaen and Malaga provinces; - H. manfredjaechi is found also in Sierras de Cazorla-Segura (SE Spain); - H. gaditana is found also in Malaga provinces.