Aglais io (Caterpillar)
Scientific Name: Aglais io
Order & Family: Lepidoptera, Nymphalidae
Size: Up to 42 mm in length

Natural Habitat
Meadows, gardens, and woodlands; usually found on stinging nettles or host plants like hops and sunflowers
Diet & Feeding
The caterpillars feed primarily on stinging nettle (Urtica dioica), as well as occasional other plants like hops or sunflowers
Behavior Patterns
Caterpillars are gregarious and live in a communal silk nest during early stages of development before dispersing as they mature to pupate
Risks & Benefits
Benefits the ecosystem as a primary pollinator when it matures into a Peacock butterfly; can be a minor garden nuisance but generally not considered a major pest
Identified on: 5/23/2026