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4.012 Stigmella aceris (Frey, 1857)
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the frass turns brown


Food Plant: Acer campestre (Field Maple), Acer platanoides (Norway Maple), Acer cappadocicum (Cappadocian Maple)

Egg: Underside of leaf

Mine: end of June-early July, August-early September

Notes: A gallery filled with green frass. The larva is green. In the older gallery the frass turns brown (as shown in the upper mine)

Data: 30.x.2003, East Ham, London, VC18

Image:© Colin Plant

sponsored by Colin Plant Associates (UK) LLP/Consultant Entomologists