Bug Identifier
Pillbug (roly-poly)
Community identification

Pillbug (roly-poly)

Armadillidium vulgare

Order & Family
Isopoda (woodlice; traditionally placed in Crustacea), Armadillidiidae
Size
About 10–18 mm long.
See this bug in the Encyclopedia

Natural Habitat

Moist, sheltered places such as under logs, stones, leaf litter, and garden debris.

Diet & Feeding

Feeds mainly on decaying plant material and fungi; occasionally consumes tender living plants.

Behavior Patterns

A terrestrial crustacean, not an insect, that is active in damp conditions and rolls into a ball when disturbed. Females carry developing young in a brood pouch.

Risks & Benefits

Harmless to people and pets; helps break down dead plant matter and recycle nutrients. Large numbers may nibble seedlings or soft garden plants.