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Fenusella nana (Klug, 1816)
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the frass is in a plug at the start of the mine

Food Plant: Betula (Birch)

Mine: Summer and Autumn

Pupa: outside the mine

Notes: Formerly Messa nana. The mine starts at the tip of a vein at the leaf edge and a plug of frass is left at the start of the mine (as shown in the developing mine). The larva is intially green and then turns a dark yellow colour towards maturity

Data: 07.vi.2005, Fleet, Hants, VC12

Image:© Rob Edmunds

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