Food Plant: Sparganium sp. (bur-reed), Iris spp., Glyceria maxima (reed sweet-grass) Elsewhere: Scirpus spp. (club-rush), Typha angustifolia (lesser bulrush)

Egg: laid on the stem

Mine: May-June

Notes: Mines the leaves and stem. Pupates usually low down within the stem. The larva constructs a small emergence hole, covered by the cuticle, prior to pupation and its presence can be detected by a small brown mark, Found where the foodplants grow especially around pond edges. Mine shown on Glyceria maxima (reed sweet-grass). The larva is just visible (as shown, on left side of gallery). The mine is central in the leaf and doesn't extend to the leaf tip, unlike that E.poae in this host.

Data: 09.v.2025, Magor Marsh, Monmouthshire, VC35

Image:© George Tordoff