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Orchestes testaceus (Müller, 1776)
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oviposition scar with gallery


Food Plant: Alnus sp. (Alder), Betula sp. (Birch)

Egg: Underside of leaf

Mine: Early Summer

Notes: Initially a gallery is formed which runs towards the leaf edge from a vein. The oviposition scar, with the gallery running off is shown. The mine then becomes a blotch and a spherical cocoon develops in this. The mine is brown. Mine shown on Alnus cordata. An uncommon UKBAP species.

Data:, Downham Market, Norfolk, VC28

Image:© Rob Edmunds

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