Archiearis parthenias

Archiearis parthenias, the orange underwing, is a moth of the family Geometridae. The species was first described by Carl Linnaeus in 1761 and can be found in Europe, Russia and Japan.

Larva

Orange underwing
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Geometridae
Genus:	Archiearis
Species:	A. parthenias
Binomial name
Archiearis parthenias (Linnaeus, 1761)

The wingspan is about 30–40 mm. The moths fly from February to May depending on the location.

The larvae feed first on the catkins and then on the leaves of birch (Betula species).^[1]