Appearance
"Hydrophilus piceus" is one of the larger water beetles, reaching a length of about 40 millimetres. The body is completely black, with red antennae. These beetles have needle-sharp spurs on their tibia. The adults are mainly vegetarian, while the larvae are carnivorous feding on tadpoles and snails.Distribution
This species is present in most of Europe, in the East Palearctic ecozone and in the Near East. It is doubtful on Balearic Islands.References:
Some text fragments are auto parsed from Wikipedia.