Common in fens, reed-beds and marshes throughout much of the British Isles. In Hampshire and on the Isle of Wight probably occurs wherever Bulrush Typha
grows in numbers. Wingspan 40-54 mm. Similar to Large Wainscot Rhizedra lutosa
but shows a subterminal row of interneural dots or short, wedge-shaped streaks. Moths taken at light away from known breeding locations are invariably wandering females. Larva feeds on Bulrush, over-wintering as an egg.