Erannis tiliaria

Erannis tiliaria
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Geometridae
Tribe: Bistonini
Genus: Erannis
Species: E. tiliaria
Binomial name
Erannis tiliaria
(Harris, 1841)

The Linden Looper (Erannis tiliaria), also known under the rather ambiguous name "winter moth", is a moth of the Geometridae family. It is found from central Alberta east to Nova Scotia, south to Missouri, Georgia, Utah and Texas.

Erannis vancouverensis was considered to be a subspecies of tiliaria for some time, but appears to be a separate species.

The wingspan is 32–42 mm for males. Females are wingless. Adult males are on wing in late fall.

The larvae feed on various deciduous trees and shrubs, including basswood, apple, ash, beech, birch, elm, maple, oak, poplar, Prunus and Ribes.

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