Bug Identifier
Bristletail (likely a jumping bristletail)
Community identification

Bristletail (likely a jumping bristletail)

Likely Petrobius sp. (identification uncertain from the image)

Order & Family
Archaeognatha; Machilidae
Size
Usually about 10–20 mm long, excluding the antennae and tail filaments.
See this bug in the Encyclopedia

Natural Habitat

Rocky, dry outdoor habitats, especially under stones, bark, and leaf litter; occasionally wanders indoors. It is not typically associated with infestations.

Diet & Feeding

Feeds mainly on algae, lichens, decaying plant matter, and organic debris scraped from surfaces.

Behavior Patterns

Fast-running and capable of jumping using its abdominal muscles; adults retain primitive external body features and develop gradually without a pupal stage. Most are nocturnal and hide in crevices during daylight.

Risks & Benefits

Harmless to people, pets, clothing, and stored food, and it does not bite or sting. It contributes modestly to decomposition and nutrient cycling.