Scientific name: Petrophora chlorosata
April to June. Britain and Ireland. A brown, medium-sized moth, with two silvery white cross-lines on the forewing. Often found near bracken, occurring in woodland, heathland and moorland.
The pale brown forewing with the two brown edged, silvery cross-lines and the dark central spot are characteristic. Readily disturbed from bracken or other vegetation by day. Flies from dusk and after dark.
Overwinters either as a pupa. Larva from mid June to September.
Size and Family
- Family – Thorns, Beauties and allies (Ennomines)
- Small Sized
- Wingspan Range - 31-37mm
- UK BAP: Not listed
Caterpillar Food Plants
Bracken (Pterdium aquilinum).
Most places where the foodplant occurs, particularly heathland, moorland and woodland.
- Countries – England, Wales, Scotland, Ireland
- Widely distributed, and sometimes abundant, throughout much of England, Wales and lowland Scotland, found north to Caithness.
- Distribution Trend Since 1970’s = Britain:Stable