Archiearis infans

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The Infant
Archiearis infans3.jpg
Infant (moth).jpg
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Genus: Archiearis
Species: A. infans
Binomial name
Archiearis infans
(Möschler, 1862)
  • Brephos infans
  • Archiearis hamadryas (Harris, 1869)

The Infant (Archiearis infans) is a moth of the family Geometridae. It is found from Alaska to Newfoundland and the northern United States, south in the east to New Jersey, south in the west to California.

Archiearis infans oregonensis

The wingspan is 30–33 millimetres (1.2–1.3 in). Adults have mottled brown forewings with a prominent white antemedian and postmedian patch at the costal margin. The hindwings are bright rust-orange with variably developed black median and marginal bands. Both sexes are similar. Adults are on wing from late March to early May in one generation per year.

The larva feed on the leaves of birch, alder, poplar, and willow, although larvae that hatch before leaves are available may feed on flower catkins. The species overwinters as a pupa.


  • Archiearis infans infans
  • Archiearis infans oregonensis (Swett, 1917) (southern British Columbia to California)

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