Japanese Yellow Swallowtail vs Spicebush Swallowtail

Side-by-side species comparison

Attribute Japanese Yellow Swallowtail Spicebush Swallowtail
Scientific Name Papilio machaon hippocrates Papilio troilus
Order Lepidoptera Lepidoptera
Family Papilionidae Papilionidae
Size 70-90 mm wingspan Wingspan 90-130mm
Habitat Mountains Underground
Diet Nectar Feeders Herbivores
Regions East Asia, Japan North America
Conservation Least Concern Least Concern

Japanese Yellow Swallowtail

The Japanese subspecies of the Old World swallowtail, known as 'ki-ageha.' A large and elegant butterfly with bright yellow wings marked with black patterns and blue hindwing spots.

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Did You Know?

This butterfly engages in 'hilltopping' behavior, where males fly to hilltops and ridges to establish territories and wait for females.

Spicebush Swallowtail

A dark swallowtail butterfly with blue-green hindwing scaling and orange spots. Its caterpillar has large false eyespots making it resemble a small snake.

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Did You Know?

The young caterpillar mimics a bird dropping while the older caterpillar switches to mimicking a green tree snake.