Contribution to knowledge of the distribution of the rare great silver water beetle Hydrophilus piceus (Linnaeus, 1758) (Coleoptera, Hydrophilidae) in Greece

This study contributes to the currently poor knowledge of the distribution of Hydrophilus piceus (LINNAEUS, 1758) in Greece, an important and elsewhere threatened and critically endangered aquatic beetle. The large great silver water beetle was recorded in various aquatic habitats in the north-western Peloponnesus, being the southernmost record of the species in Greece. Photographs of the adult of the species are presented, and some notes on its ecology are provided. This work highlights the importance of revising the current status of the species in Greece, protecting its habitat and including it as a target species for conservation efforts.