Food Plant: Carex spp: C.echinata (Star Sedge), C. flacca (Blue Sedge), C.laevigata (Smooth Sedge), C.paniculata (Greater tussock-sedge), C.pendula (Pendulous Sedge) ; Luzula pilosa (Hairy Woodrush), L.sylvatica (Great wood-rush)

Egg: laid under the tip of the leaf

Mine: September-May

Notes: Mines towards the base of the leaf, ultimately in a mine as broad as the leaf.The frass is deposited in large irregular islands.The larva is a whitish-grey and has a dark brown head and black prothoracic plate. If the leaf tip die-back in winter overtakes the mining larva it then moves to another leaf. A mine on Luzula.sylvatica in winter, the larva is visible in the top left.

Data: 27.xii.2022, Clatworthy Reservoir, South Somerset, VC5

Image:© Will Langdon