Food Plant: Centaurea jacea (Brown Knapweed), C.nigra (Knapweed), Jacobaea vulgaris (Common Ragwort). Elsewhere: C.scabiosa (Greater Knapweed), Tragopogon sp. (Salsify)

Mine: unknown

Notes: An internal stem borer in Knapweed species. The puparium is shown and the posterior spiracles almost touch, having a strong central horn, surrounded by an ellipse of 15 bulbs. Puparium shown in Jacobaea vulgaris (Common Ragwort).

Data: 13.xi.2021, Downham Market, Norfolk, VC28

Image:© Rob Edmunds