Woodlouse (specifically the Common Woodlouse or Sowbug)
Scientific Name: Oniscus asellus
Order & Family: Order Isopoda, Family Oniscidae
Size: 10 to 18 millimeters (0.4 to 0.7 inches) in length

Natural Habitat
Damp, dark environments such as under logs, rocks, leaf litter, and in basements or crawl spaces.
Diet & Feeding
Detritivorous; they primarily eat decaying plant matter, rotting wood, and fungi, acting as natural recyclers.
Behavior Patterns
They are nocturnal and active at night to avoid desiccation. They are terrestrial crustaceans that breathe through gill-like structures, requiring moisture to survive. They often congregate in large groups to conserve water.
Risks & Benefits
They pose no risk to humans as they do not bite, sting, or spread disease. They are highly beneficial to ecosystems as decomposers that help return nutrients to the soil.
Identified on: 3/7/2026