Wingspan 22-30 mm. This species is quite variable and some examples are quite dark and dull-looking, whereas others can have delicately-patterned white patches and streaks.

Around ponds, lakes and canals.

The moth flies from June to August.

The group of moths known as China-marks are unusual in that their larvae are entirely aquatic, feeding on water plants.

Fairly common throughout Britain. In the Butterfly Conservation’s Microlepidoptera Report 2011 this species was classified as common.

Quite common in Leicestershire and Rutland. L&R Moth Group status = A (common and resident)