Berosus affinis


A small (3.5 to 4.5 mm) water beetle.

Identification difficulty
Recording advice

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.


Ponds and other marshy habitat types.

When to see it

All year round.

UK Status

Widespread in the southern half of Britain but rather local.

VC55 Status

Rarely recorded in Leicestershire and Rutland with only a handful of records.

be our species champion

Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map