Scientific name: Hemistola chrysoprasaria
Late June to early August. Most frequent in southern Britain becoming scarce north of the Midlands.
The wings are rounded with two white cross-lines on the forewings and a single cross-line on the hindwing. They are a rich blue-green colour fading to white with age.
The adults fly at night from dusk and are attracted to light. The caterpillars can be found from July or August to the following June overwintering as larvae. They pupate in a cocoon suspended by threads from the foodplant.
Size and Family
- Family – Emeralds (Geometridae)
- Small Sized
- Wingspan Range – 34-40mm
- UK BAP: Priority species (Research only)
- Local (only found in some areas)
Caterpillar Food Plants
Traveller’s-joy (Clematis vitalba)
Hedgerows, open woodland and gardens on chalk or limestone where the foodplant grows
- Countries – England and Wales
- Found fairly frequently in England and Wales, north to the Wash but more locally in Lincolnshire, the Midlands and the west coast of England north to southern Cumbria as well as the Channel Islands. Occasional records in southern Scotland and the north-east of Ireland.