![]() Lep:Gracillariinae
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15.020
Dialectica imperialella (Zeller,1847)
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Food Plant: Symphytum officiniale (Common comfrey), Pulmonaria longifolia (narrow-leaved Lungwort) Egg: underside, near to the rib Mine: August-September Notes: Formerly Acrocercops imperialella. A very rare miner in the UK, found in damp woodland and fens. Known from four fenland sites in the UK in Cambridgeshire, Huntingdonshire and recently (Barton, 2018) in Suffolk. Rediscovered in the Isle of Wight (Beavan, 2021).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 and care must be taken to distinguish these mines from diptera - which can form blackish blotches. Pupation can occur inside or on the leaf surface - this was the case with on S.officinale and P sempervivens.whereas with E. plantagineum pupation took place inside the leaf (Carina van Steenwinkel pers.comm.). In Southern Britain the foodplant is Pulmonaria longifolia (narrow-leaved Lungwort) not Pulmonaria officinalis (Lungwort) (Beavan, 2021), whereas in Eastern England it is Symphytum officiniale (Common comfrey). National Status: pRDB1 Bradley No: 311 Data: 26.vi.2005, Amsterdam, Netherlands Image:© Willem Ellis References: |
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sponsored by Colin Plant Associates (UK) LLP/Consultant Entomologists |
www.leafmines.co.uk |