Hosts in Great Britain & Ireland : Dipsacus, Knautia and Succisa
Mine : The larvae feeds mainly in the mid-rib, making short corridors into the leaf blade. In Dipsacus, the corridors are short (as shown above) whereas in Knautia and Succisa, they are much longer.
Frass is mostly deposited in the mid-rib, with no frass usually been visible in the leaf-blade corridors.
Pupation : In the mid-rib
Puparium : Pale yellow
Phenology : The larvae hibernates during the winter months (October - April) in the basal rosette of leaves and commences feeding in the following Spring. There are at least two generations, with feeding larvae been found May - August.