Food Plant: Carex acutiformis (Lesser Pond Sedge), C.bigelowii (Bigelow's Sedge), C.riparia (Great Pond Sedge) C.acuta (Tufted Sedge), C.paniculata (Great Tussock Sedge)

Egg: laid near to leaf tip

Mine: September-July

Notes: Forms a long gallery down the leaf, usually over the midrib or close to it, and finally feeds amongst the leaves at the base of the plant. The larva is yellowish with a dark head and becomes a red-brown colouration when preparing to pupate. Found in marshes and wet meadows. Close up of a larva mining the base of the plant on Pond Sedge.

Data: 02.v.2022, Cothill Fen, Oxfordshire, VC22.

Image:© Will Langdon