Roly polys, also known as pill bugs or woodlice, are small, segmented crustaceans common in many backyards. Despite their insect-like appearance, they are more closely related to aquatic creatures like lobsters and crabs, being the only crustaceans fully adapted to land. They are recognized by their armored, plate-like bodies and their distinctive ability to curl into a tight ball when disturbed, a defense mechanism protecting their soft undersides and retaining moisture. These harmless creatures often spark curiosity, leading many to wonder where to find them.
Preferred Environments
Roly polys thrive in specific environmental conditions that provide the moisture, darkness, and decaying organic matter they require for survival. Moisture is essential for these terrestrial crustaceans because they breathe through gill-like structures that must remain damp for gas exchange. They cannot survive prolonged exposure to dry air or submersion in water.
They prefer shaded, protected spots away from direct sunlight and extreme temperatures. They are nocturnal, most active at night. These creatures feed on decaying leaves, wood, and other plant material, making them important decomposers in the ecosystem, found where these resources are abundant.
Common backyard locations include under rocks, logs, and leaf litter. They are also found in garden debris, under potted plants, within compost piles, and beneath outdoor rugs or doormats, as these spots offer consistent dampness and shelter. They often burrow just beneath the soil surface to avoid dry conditions.
Practical Search Tips
To locate roly polys, a gentle and observant approach is most effective. Begin by carefully lifting objects like rocks, logs, or empty flower pots in damp, shaded areas. Always return these objects to their original position after your search to minimize disturbance to their habitat and other organisms.
The best times to search are during cooler, damper periods, such as early morning or after a rain shower. As they are nocturnal, searching at night with a flashlight can yield good results. Simple tools like a small stick can gently prod through leaf litter or loose soil. A magnifying glass can enhance observation once found.
Handling and Observation
Once roly polys are found, observing them is fascinating. Handle them with care, as they are fragile despite their armored appearance. Let them crawl onto your outstretched hand or carefully transfer them to a clear container for brief observation.
If placed in a container, ensure it contains moist soil and leaf litter, mimicking their natural environment. Roly polys should be released back into their habitat quickly after observation, as they are not suitable long-term pets. Observing their defensive behavior of rolling into a ball offers insight into their adaptations. Their role as decomposers, breaking down dead organic matter and returning nutrients to the soil, highlights their positive contribution to the ecosystem.