Lep:Gracillariinae
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15.020 Dialectica imperialella (Zeller,1847)
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Food Plant: Symphytum officiniale (Common comfrey), Pulmonaria officinalis (Lungwort)

Egg: underside, near to the rib

Mine: August-September

Notes: Formerly Acrocercops imperialella. A rare miner in the UK, found in damp woodland and fens. The initial gallery is soon absorbed into a blotch. The blotch is squarish as the larva eats through the leaf parenchyma to the upper epidermis. The blotch turns brown 9as shown) and care must be taken to distinguish these mines from diptera - which can form blackish blotches. Mine shown is on Echium plantagineum. The cocoon is formed inside the leaf and is shown bottom left of the blotch.

Data: 27.vii.2013, Mol, (Antwerpen), Belgium

Image Carina van Steenwinkel

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

www.leafmines.co.uk