Food Plant: Salix spp.(Sallow and Willow), Myrica (Bog-myrtle)  

Mine: September to October, feeding again from April to May

Notes: Larva mining leaves. The single case is progressively extended from the oral end to a length of 8-10mm. It is finally tri-coloured, green at the oral end, brown in the centre, and dark at the anal end.
The formation of this case can be seen above.
On 03.v.05 (top photo) the case consisted of two layers and the larva is excising the leaf edge.
On 04.v.05 the larva has excised the leaf (to the left of the case) to form the green layer at the oral end of the case.

Data: 03.v.2005 (top photo); 04.v.2005 (lower photo), Fleet, Hants, VC12

Image:© Rob Edmunds