Species Euchlaena irraria - Least-marked Euchlaena - Hodges#6739

6739

wingspan 37-48 mm

wings powdery yellowish or brownish-gray with fine speckling; forewing has faint brown AM line and brown sinuous, usually complete PM line; dark brown shading along lower half of PM line, fading back to ground color toward outer margin; discal spots blackish, usually prominent on all wings but may be absent

[adapted from description by Charles Covell]

Nova Scotia to South Carolina, west to Missouri, north to Saskatchewan

adults fly from May to August

larvae feed on leaves of birch, dogwood, maple, meadowsweet, oak, poplar, sweet-fern

one generation per year

Confused Eusarca (Eusarca confusaria) is similar but has a straight PM line with no dark shading beyond it (compare images of both species)

Euchlaena marginaria has a yellow PM line with yellow shading beyond it, and heavy speckling on all wings (compare images of both species)

Also see other Euchlaena species)

Moth Photographers Group - range map, photos of living and pinned adults.

live adult image (Lynn Scott, Ontario)

pinned adult images (CBIF)

pinned adult image (James Adams, Dalton State College, Georgia)

presence in South Carolina; map (John Snyder, Furman U., South Carolina)

distribution in Canada list of provinces (CBIF)