Length 3.5 to 4 mm. This species is boat shaped with elytra broadest in front of middle. The colour of the elytra is variable but usually mid to dark brown with a slightly lighter pronotum.
Usually found in ponds.
All year round but most easily recorded in summer.
Both adults and larvae are aquatic, and are commonly found around plants. They have a habit of burrowing through pond and marsh substrate, thus the common name, and are primarily carnivorous, with some scavenging observed.
Widespread and frequent in England and Wales, with fewer records coming from Scotland.
Common in Leicestershire and Rutland. There were a total of 140 VC55 records for this species up to March 2015.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015