Food Plant: Hydrocharis morsus-ranae (Frogbit), Sparganium species (Chamomile), Potomogeton spp.

Egg: underside of leaf

Mine: August - June

Notes: A common species in the UK. It mines the leaf for the first three days and then forms a flat case from which the larva feeds (as shown). It causes blotches on the leaf as it eats the underside.

Data: 20.iv.2017, Kingston Lacy, Dorset, VC9

Image:© Jenny Seawright