Woodlouse

Scientific Name: Armadillidium vulgare

Order & Family: Isopoda; Armadillidiidae

Size: 10 to 18 mm in length.

Woodlouse

Natural Habitat

Damp environments such as under rocks, logs, leaf litter, and in basement crevices with high humidity.

Diet & Feeding

Primarily detritivorous, feeding on decaying plant matter, fungi, and sometimes animal remains.

Behavior Patterns

Nocturnal animals that seek out moisture; they exhibit 'conglomeration' behavior and 'volvations' (rolling into a ball) to protect themselves and prevent water loss.

Risks & Benefits

Generally harmless to humans and structures; they are beneficial to the ecosystem as decomposers that recycle nutrients back into the soil.

Identified on: 6/20/2026