Length 9 to 14 mm. The back of the wing is quite sharply angled. The amount of mottling on the wing varies from one individual to the next.
Streams and rivers, and can be attracted to light.
May to September.
Larva spins a net amongst gravel to trap food.
Common and widespread in Britain.
Probably under recorded in VC55 (Leicestershire and Rutland) where there are very few records, the first being from Groby in 2010.
Leicestershire & Rutland Map
Enter a town or village to see local records
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015