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.
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Scientific Classification
- Family: Geometridae
- Genus: Ennomos
- Scientific Name: Ennomos magnaria
Description and Identification
Caterpillar
Their bodies are brown, gray, or green with white spots, which helps them to mimic twigs.
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Pupa
After maturing, the larvae pupate in cocoons hidden amongst foliage consisting of their host plants.
Adult Moth
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
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Egg
Eggs overwinter during the colder periods.
Quick Facts
| 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.
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Scientific Classification
- Family: Geometridae
- Genus: Ennomos
- Scientific Name: Ennomos magnaria
