Food Plant: Betula (Birch)

Mine: August to September, with some larvae developing more slowly, and feeding again in April and May.

Notes: Larva mining leaves, the blotches brownish. The final case is 8-11mm long, slender, and fixed at 45° to leaf surface, with anal end laterally compressed (as shown). The case has a serrated keel due to formation from the edge of a leaf.

Data: 08.x.2005, Bartley Heath, Hants, VC12

Image:© Rob Edmunds