Mine: Univoltine: autumn

Pupa: Inside mine in a disc shaped cocoon

Notes: The ventral view of the larva is seen here - note the short feet (a distinguishing feature from F.dohrnii). In the winter it enters a prepupal stage (as illustrated),  losing its pigmentation.

Image:© Rob Edmunds

Data: 20.iii.2005, Fleet, Hants, VC12