Forewing length 4 to 6 mm.  Male forewing with a pouch of scent scales. It is a fairly plain, dark brown species.

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.

Canals, rivers and large streams.

June to September is the main flight period.

Widespread in Britain but not common.

Not often recorded in Leicestershire and Rutland.  There were just 3 adult records and 2 larval records in VC55 to the end of 2019.