Flea Larva

Scientific Name: Ctenocephalides felis (Most likely, the Cat Flea)

Order & Family: Order: Siphonaptera, Family: Pulicidae

Size: Typically 2 to 5 mm (approx. 1/8 to 1/4 inch) in length.

Flea Larva

Natural Habitat

Deep inside carpet fibers, cracks in flooring, pet bedding, and dark, humid areas where organic debris accumulates.

Diet & Feeding

Scavengers that feed on organic matter, mainly 'flea dirt' (dried blood feces excreted by adult fleas), dead skin flakes, and other debris.

Behavior Patterns

They are negatively phototactic (avoid light) and will burrow deep into carpets or bedding. They are worm-like and active, eventually spinning a silken cocoon to pupate into adulthood.

Risks & Benefits

Risks: Their presence indicates an active flea infestation in the home. They mature into biting adults that irritate pets and humans, cause allergic dermatitis, and can transmit tapeworms. No household benefits.

Identified on: 2/16/2026