Archiearis notha, the light orange underwing, is a moth of the family Geometridae. The species was first described by Jacob Hübner in 1803 and can be found in Europe.
The wingspan is about 35 mm. The moths fly from March to April depending on the location.
The larvae feed on aspen (Populus tremula), hiding between spun leaves during the day.
References
External links
Kimmo's Lep Site Boudinotiana notha at Moths and Butterflies of Europe and North Africa
Lepiforum e.V. Portal für Schmetterlinge und Raupen