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16.013 Kessleria fasciapennella (Stainton, 1849)
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frass is scattered in the mine

Food Plant: Parnassia palustris (Grass of Parnassus)

Egg: on the leaf petiole or at the base of a leaf

Mine: June-July

Notes: Initially mines a leaf. The upper surface mine is usually adjacent to the leaf margin and gently sinuous with irregularly scattered frass (as shown, in vacated mines). Occasionally the mines may widen to form small blotches. After the leaf is mined the larva feeds, in a web, on the rosette leaves and stem. This web is made at the base of the plant, amongst the leaf litter and moss. This is the second record of this species since the mid-nineteenth in the Britain. The larva previously had not been found in the British Isles (Beavan, S.D., Heckford, R.J., Prescott, T., Watson, D. & Young, M.R. (2015), Kessleria fasciapennella (Stainton, 1849) (Lepidoptera:Yponomeutidae): discovery of the larva in Scotland and consideration of prior Scottish records of the adult, Entomologist’s Gazette 67: 23–46)

National Status: Extinct (thought extinct but rediscovered in 2013)

Bradley No: 433

Data: 09.vii.2015, Meall Mór, Glencoe, Argyll, Scotland, VC 98

Image:© R. J. Heckford

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