Food Plant: Jacobaea aquatica (Water Ragwort), J.erucifolia (Hoary ragwort), J.vulgaris; Senecio viscosus (Sticky ragwort), S.vulgaris (Groundsel)

Mine: Summer

Notes: The flowerhead becomes swollen at the base and the bracts are wider as a result of the larva mining internally (as shown). The infected flowerhead may contain the white fly larva or a brown puparium. Adult reared to confirm identitity;emerged 12.viii.2023

Data: 04.viii.2023, Downham Market, Norfolk, VC28

Image:© Rob Edmunds