Status: Nb
Notes: Nationally rare, southern England, spreading into northern England. Wingspan 12-13mm. Case 11-13mm. Nocturnal; July to August. Larva September to November and (after diapause) late May to early July, over-wintering twice in some are as. Larva mines leaves of Alder, living and feeding in a movable case.

Flightime guide
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