Scarce Merveille du Jour Moma alpium
Wingspan 30-35 mm.
An unusual and very attractive species, with its marbled bluish-green and black forewings. The green colour tends not to fade as much as most other green moths.
It is a very local species in Britain, now confined to mature deciduous woodland in the very south and south-east of England.
It flies in June and July, and visits sugar and artificial light.
The larvae feed, gregariously at first, on oak (Quercus).