Sowbug

Sowbugs, *Porcellio scaber*, are common terrestrial isopods belonging to the suborder Oniscidea, not insects. Adults typically measure 12–15 mm in length, characterized by a flattened, oval, segmented body (dorsoventrally compressed) and distinct antennae, seven pairs of robust legs, and two terminal uropods that project noticeably from the posterior. Reproduction occurs sexually; females carry 20–200 eggs in a fluid-filled brood pouch, or marsupium, for 3–7 weeks before releasing live young, sometimes producing multiple broods per year. Their respiratory system, consisting of gill-like pseudotrachea, necessitates high relative humidity (above 70%) for survival, making them highly susceptible to desiccation. Sowbugs can live 2–3 years under optimal humid conditions, developing through several molts after hatching.

Primarily nocturnal detritivores, *P. scaber* are active during nighttime hours to forage, minimizing exposure to desiccating conditions and predators. They are social, often found aggregated in groups, which helps conserve moisture and provides a degree of protection. Dispersal is typically limited and localized, driven by moisture gradients and food availability. Communication involves chemical cues, though complex social structures are absent. Their diet consists almost exclusively of decaying organic matter—leaves, wood, fungi, and sometimes young plant roots or seedlings if other food is scarce—playing a key role in nutrient cycling. Sowbugs exhibit a defensive 'freeze' response when disturbed, but, unlike pillbugs, cannot voluntarily roll into a perfect ball; they are harmless to humans and structures, posing no public-health threat or property damage.