Bug Identifier
Io Moth
Community identification

Io Moth

Automeris io

Order & Family
Lepidoptera, Saturniidae
Size
Wingspan typically ranges from 2.5 to 3.5 inches (6.3 to 8.8 cm).
See this bug in the Encyclopedia

Natural Habitat

Deciduous forests, open woodlands, meadows, and suburban areas throughout eastern North America.

Diet & Feeding

Adults do not eat as they have vestigial mouthparts; caterpillars feed on a wide variety of host plants including oak, willow, maple, and cherry.

Behavior Patterns

Nocturnal; they use large eyespots on their hindwings as a startle defense against predators. They have a complete metamorphosis life cycle.

Risks & Benefits

Caterpillars possess venomous stinging spines that cause painful reactions in humans; adults are high-value pollinators and food sources for bats and birds.