Local in fens, marshes, water meadows, damp woodland and gardens throughout much of the British Isles. In Hampshire and on the Isle of Wight local in marshes, and occasionally in gardens, where it is thought to use various ornamental grasses. Wingspan 32-35 mm. Generally the easiest of the Oligia group to identify. The larva feeds within stems of various grasses, including Reed Canary-grass, Reed Sweet-grass, and Pampas-grass in more urban areas.