Bug Identifier
Small Tortoiseshell Caterpillar
Community identification

Small Tortoiseshell Caterpillar

Aglais urticae

Order & Family
Lepidoptera, Nymphalidae
Size
Up to 22 mm as a caterpillar; 45–62 mm wingspan as an adult.
See this bug in the Encyclopedia

Natural Habitat

Meadows, gardens, and waste ground where stinging nettles (Urtica dioica) grow.

Diet & Feeding

Larvae feed almost exclusively on stinging nettles (Urtica dioica). Adults feed on nectar from flowers like thistles and buddleia.

Behavior Patterns

Young caterpillars live communally in silk nests for protection; older larvae become solitary. They go through five larval stages before pupating.

Risks & Benefits

Non-toxic and harmless to humans. They are beneficial pollinators as adults and serve as an important food source for birds and parasitic wasps.