Frequents marshes, river-banks and damp areas.
The larvae feed on the seeds and create a silken case with the seed husk around it.
Recorded in 11 (4.1%) of the 270 2km squares of Huntingdonshire.
Last recorded in June 2020
Recorded date range (Adult): 23 June to 26 July
Recorded date range (Larva/Leafmine): 17 September to 20 September