Food Plant: Carex spp., such as C.flacca (Blue Sedge), C.arenaria (Sand Sedge)

Egg: laid on the leaf

Mine: September-May; June-July

Notes: Initially a thin gallery is formed towards the leaf tip. After 2-3cms the mine turns downwards and broadens. It then becomes whitish and inflated. Found in heaths and grasslands throughout England and Wales. Larvae usually fix for pupation at the base of a leaf of the foodplant, as here on Carex flacca.

Data: ex mine 03.x.2023, Aston Rowant NNR, Oxfordshire, VC23

Image:© Will Langdon