Food Plant: Betula (Birch)       

Mine: May - June

Notes: The early gallery starts in the centre of the leaf (as shown). It is a linear track which widens to a large blotch at the leaf edge, with frass in long threads. The mine is almost fully developed and an earlier stage of this mine may be seen here.

Data: 16.v.2009, ex mine 09.v.2009, Dinton Pastures, Berkshire, VC22

Image:© Rob Edmunds