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Orchestes testaceus (Müller, 1776)
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a narrow corridor leads to a blotch


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 mine then becomes a blotch and a spherical cocoon develops in this. The mine is brown. Mine shown on Alnus sp.. An uncommon UKBAP species.

Data: 14.v.2015 ,Scheps~Balen, Belgium

Image:© Carina van Steenwinkel

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