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

Representative Images

Least-marked Euchlaena - Euchlaena irraria - female Least-marked Euchlaena - Hodges#6739 - Euchlaena irraria - male Euchlaena irraria - Euchlaena irraria - male Eusarca confusaria? - Euchlaena irraria - female least-marked Euchlaena caterpillar - Euchlaena irraria Euchlaena irraria - male Euchlaena irraria - male Geometrid - Euchlaena irraria - male
Show images of: caterpillars · adults · both

Classification

Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Ennominae
Tribe Angeronini
Genus Euchlaena
Species irraria (Least-marked Euchlaena - Hodges#6739)

Hodges Number

6739

Size

wingspan 37-48 mm

Identification

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]

Range

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

Season

adults fly from May to August

Food

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

Life Cycle

one generation per year

See Also

Confused Eusarca (Eusarca confusaria) is similar but has a straight PM line with no dark shading beyond it.
Euchlaena marginaria has a yellow PM line with yellow shading beyond it, and heavy speckling on all wings.

Internet References

Moth Photographers Group - range map, photos of living and pinned adults.
iNaturalist
BOLD Systems
Contributed by Robin McLeod on 30 January, 2006 - 1:16am
Additional contributions by Tony-2, Chuck Entz, Maury Heiman, marcie oconnor
Last updated 12 June, 2024 - 7:58am

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