Grey Mountain Carpet

Entephria caesiata
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Geometridae
Genus:	Entephria
Species:	E. caesiata
Binomial name
Entephria caesiata (Denis & Schiffermüller, 1775)

Entephria caesiata, the grey mountain carpet, is a moth of the Geometridae family. It is found in the mountainous areas of Europe (including Great Britain, Fennoscandia and the Alps), the Caucasus, Asia Minor, Armenia, Russia , Russian Far East, Siberia, northern Mongolia, Sakhalin and Japan (Honshū).

The wingspan is 32–41 millimetres (1.3–1.6 in). The forewing ground colour is ash grey to blue grey. There are several dark wavy bands. The basal area and the field between the two fasciae is also darker than the ground colour. There is a black discal spot. The fringes are grey chequered dark grey. The hindwing is pale grey with pale transverse lines and a grey-black discal spot.

Adults are on wing from July to September.

The larvae feed on various low heathland plants, including Calluna and Vaccinium myrtillus. Other recorded food plants include Betula species (including Betula nana), Vaccinium uliginosum, Ledum palustre and Empetrum nigrum.

...
Wikipedia