Millipede

Scientific Name: Class Diplopoda (various species)

Order & Family: Order: Julida (common), Family: Julidae (common), among others within Diplopoda

Size: Typically 1 to 10 cm (0.4 to 4 inches), though some tropical species can reach up to 38 cm (15 inches). The one pictured appears to be on the smaller end of this range.

Millipede

Natural Habitat

Damp, dark places such as under rocks, logs, leaf litter, decaying wood, and in soil; often found in gardens, forests, and basements.

Diet & Feeding

Detritivores, meaning they primarily feed on decaying organic matter such as dead leaves, decomposing wood, and other plant debris. Some species may also eat fungi or soft plant tissues.

Behavior Patterns

Nocturnal; slow-moving; when disturbed, they often curl into a tight coil (as seen in the image) to protect their soft undersides. They communicate using pheromones and lay eggs in soil.

Risks & Benefits

Benefits include their role as decomposers, helping to break down organic matter and enrich soil. Risks are generally low; they do not bite or sting. However, some species can secrete irritating fluids (containing hydrogen cyanide or benzoquinones) as a defense mechanism, which can cause skin irritation or allergic reactions in sensitive individuals, and can be harmful if ingested by pets or children.

Identified on: 10/9/2025