This is a dull and nondescript species, as suggested by the vernacular name.
Pupates under loose bark or on the ground.
Wet woodland, fens, heathland and riverbanks.
Recorded in 57 (21.1%) of the 270 2km squares of Huntingdonshire.
Last recorded in June 2023
Recorded date range (Adult): 05 June to 22 September
Recorded date range (Larva/Leafmine): 12 July to 12 July