Over all length 17 - 20mm. Head, thorax and abdomen are a light, pinkish-brown. The thorax is marked with dark brown and there is a broad, broken, dark-brown line down the abdomen. The wings have a whitish crescent towards the tip which is adjacent to a dark cloud that extends further towards the wing-tip.
Wet, marshy areas with plenty of rotting vegetation. On the reserve there is a population behind the Large Gravel Pit.
Status and distribution
It is distributed throughout Britain but tends to be local, although often common where it is found. On the reserve can be quite common in some years.
Best time to see
May to September.