|scientific name Archiearis |
A temperate zone genus of northern boreal forests.
Adults appear in early spring, often the first of the non-hibernating Lepidoptera to appear.
The forewing is brown with AM and PM white patches near the costa. The hindwing is a distinctive bright rust-orange with brown, lending it the name Orange Underwing in the UK.
The light green eggs, which later turn yellowish, are laid in clusters at the base of host plant buds. There are four larval instars, and they overwinter as pupae.
Common widespread insects; no concerns.
As far as is known, the larvae feed on the catkins and leaves of Betulaceae and Salicaceae.
Holarctic, with only one species (A. infans) occuring in North America. Several additional species occur in Europe and temparate parrts of Asia.
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