Woodlouse
Scientific Name: Various species in the suborder Oniscidea
Order & Family: Isopoda (order), Oniscidea (suborder)
Size: Generally range from 0.5 to 1.5 cm (0.2 to 0.6 inches) in length, depending on the species.

Natural Habitat
Damp, dark environments such as under rocks, logs, leaf litter, and in soil; often found in gardens, forests, and sometimes indoors in moist areas.
Diet & Feeding
Primarily detritivores, feeding on decaying organic matter such as rotting wood, dead leaves, and fungi. Some species may also consume young plants or algae.
Behavior Patterns
Nocturnal, most active at night. They are known for their ability to roll into a ball (conglobation) as a defense mechanism when disturbed. They require high humidity to survive due to their gill-like respiratory structures and will actively seek out moist environments.
Risks & Benefits
No known risks to humans (non-toxic). They are beneficial decomposers, playing a vital role in nutrient cycling by breaking down organic matter in ecosystems. In large numbers, they may sometimes nibble on young plants, but significant crop damage is rare. They can be an indicator of dampness indoors.
Identified on: 11/15/2025