Soil Centipede

Soil centipedes make up the order Geophilomorpha, a group defined by their extremely elongated, thread-like bodies bearing anywhere from about 30 to well over 100 pairs of legs depending on the species. Unlike the fast-running stone or house centipedes, soil centipedes are built for burrowing, pushing through loose soil and decomposing wood using undulating body movements much like a small worm.

These pale, often yellowish or pinkish centipedes are seldom seen above ground and spend virtually their entire lives within the soil profile or inside rotting logs, where they hunt small invertebrates. Their role as subterranean predators makes them an important, if rarely noticed, part of the soil ecosystem.

• Very long, slender, worm-like body, much thinner in proportion to length than other centipedes
• Numerous leg pairs, often 30 to over 100 depending on species, always an odd number of pairs
• Coloration typically pale yellow, tan, or pinkish, sometimes with a darker head
• Lacks the long antennae-like rear legs seen in house centipedes
• Moves with a slow, wave-like, snake-like motion rather than scurrying
• No eyes in most species, relying on sensory antennae instead

Found worldwide in soil, leaf litter, and decaying wood, soil centipedes rarely surface, remaining within the cool, humid soil profile of gardens, forests, and grasslands. They are most likely to be uncovered by digging or turning over deeply buried logs and stones rather than surface debris.

Soil centipedes prey on small soil invertebrates such as earthworm eggs, insect larvae, and other tiny arthropods, using a venom-injecting bite delivered through modified front legs to immobilize prey in confined soil spaces. Their elongated bodies let them navigate narrow crevices and burrows that larger, stiffer centipedes cannot enter. As subterranean predators, they help regulate populations of other small soil organisms and are themselves food for larger burrowing predators.

Females typically guard a clutch of eggs, coiling around them in a soil chamber until they hatch, a behavior distinct from many other centipede groups. Unlike stone centipedes, soil centipedes hatch with their full adult number of legs and segments (epimorphic development), growing larger through subsequent molts without adding more segments. Development can take one to two years to reach maturity, and adults may live for several years within the soil.