Io Moth vs Japanese Robber Fly

Side-by-side species comparison

Attribute Io Moth Japanese Robber Fly
Scientific Name Automeris io Cophinopoda chinensis
Order Lepidoptera Diptera
Family Saturniidae Asilidae
Size 63-88 mm wingspan 20-30 mm
Habitat Meadows Forests
Diet Predators Predators
Regions North America East Asia
Conservation Least Concern Least Concern

Io Moth

Named after Io from Greek mythology. Hindwings display large eyespots that flash open to startle predators. Caterpillars are covered in urticating spines that cause a painful sting.

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Did You Know?

When threatened, the Io moth suddenly flashes open its hindwings to reveal two enormous eyespots — the sudden appearance of "eyes" startles predators into backing off.

Japanese Robber Fly

A large East Asian robber fly with powerful raptorial legs. It preys on cicadas and large beetles in montane forests.

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Did You Know?

It is one of the few flies capable of overpowering and killing adult cicadas.