Food Plant: Ballota nigra (Black Horehound), Lamium spp. (Dead-nettle), Marrubium vulgare ( White Horehound), Stachys spp. (Woundwort)

Mine: Summer and early autumn

Notes: The frass is conspicuous in the mine and the mine is initially linear , then develops into a white blotch (as shown), often enveloping this early mine

Data: 14.vii.2009, Fleet, Hants,VC12

Image:© Rob Edmunds