Hym:Tenthredinidae
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Heterarthrus aceris (Kaltenbach, 1856)
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excised pupal disc

 

Food Plant: Acer pseudoplatanus (Sycamore) only.

Mine: Univoltine: early summer.

Notes: A large, upper surface marginal blotch, usually going brown and usually with an excised hole (as shown), which is characteristic of Heterarthrus species. A widespread miner of Sycamore

Data: 21.vi.2014, Wijnendale bos, Torhout, (Oost Vlaanderen)

Image:© Carina Van Steenwinkel

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