Maple Spanworm Moth (Ennomos magnaria)
The maple spanworm moth is a member of the family of geometer moths found in parts of North America. This species is known for its resemblance to an autumn leaf.
Description and Identification
Their bodies are brown, gray, or green with white spots, which helps them to mimic twigs.
After maturing, the larvae pupate in cocoons hidden amongst foliage consisting of their host plants.
Sexual Dimorphism: Present but not prominent.
Color and Appearance
When the wings are open, they resemble a red leaf commonly seen during fall. They are primarily orange-yellow with brown spots and a reddish-brown tinge near the outer edges. When the wings are closed, they appear uneven and scalloped.
Average wingspan: 4.3-6 cm
Flight pattern: Consistent
Season: July to early November
Eggs overwinter during the colder periods.
|Other names||Notched wing moth, notched-wing geometer, notch-wing moth|
|Distribution||North America; including southern Canada and the northern United States, in the states of California, Florida, and Louisiana|
|Habitat||Deciduous and mixed forests and woodlots|
|Lifespan of Adults||Not recorded|
|Host Plants||Alder, ash, basswood, birch, elm, hickory, maple, oak, and poplar|
|Adult Diet||Does not feed|
Did You Know
- French entomologist Achille Guenée first described this species in 1858.