Food Plant: Bolboschoenus maritimus (Sea Club-rush) , Juncus gerardii (rush), J.compressus (rush)

Egg: laid on a leaf

Mine: April-June

Notes: Makes a short broad greenish-white mine in the upper part of the leaf. The frass is deposited in the middle of the mine as a dark mass. Pupation occurs on the midrib of the host plant in a slight web. The habitat is shown.

Data: 01.vi.2025, Porthkerry, Glamorgan, VC41

Image:© George Tordoff