Io Moth vs Large Stonefly
Side-by-side species comparison
| Attribute | Io Moth | Large Stonefly |
|---|---|---|
| Scientific Name | Automeris io | Perla bipunctata |
| Order | Lepidoptera | Plecoptera |
| Family | Saturniidae | Perlidae |
| Size | 63-88 mm wingspan | 20-30 mm |
| Habitat | Meadows | Rivers & Streams |
| Diet | Predators | Predators |
| Regions | North America | Europe |
| Conservation | Least Concern | Near Threatened |
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.
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.
Large Stonefly
One of the largest European stoneflies with a distinctive pair of pale spots on its head. Its predatory nymphs live among stones in fast-flowing rivers.
Did You Know?
Large stonefly nymphs require three years to complete development, making them particularly vulnerable to long-term changes in water quality.