Black Swallowtail vs Spiny Oak Slug Moth

Side-by-side species comparison

Attribute Black Swallowtail Spiny Oak Slug Moth
Scientific Name Papilio polyxenes Euclea delphinii
Order Lepidoptera Lepidoptera
Family Papilionidae Limacodidae
Size 69-84 mm wingspan 22-30 mm wingspan
Habitat Gardens Orchards
Diet Nectar Feeders Omnivores
Regions North America Eastern North America
Conservation Least Concern Least Concern

Black Swallowtail

Black butterfly with yellow spot bands and blue hindwing patches; orange and black eyespot on each hindwing. Common in gardens across eastern North America.

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Did You Know?

Caterpillars extend a foul-smelling orange forked organ called an osmeterium when threatened.

Spiny Oak Slug Moth

A small colorful moth with green, brown, and silver-spotted forewings. Its flattened, jewel-like caterpillar is green with red and yellow markings and bears stinging spines.

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Did You Know?

The ornate caterpillar has been called one of the most beautiful in North America despite its painful sting.