Flea Larva
Scientific Name: Ctenocephalides felis (most common) or Ctenocephalides canis
Order & Family: Order: Siphonaptera, Family: Pulicidae
Size: Typically 2 to 5 mm in length
Natural Habitat
They thrive in dark, humid environments such as deep carpet fibers, bedding, cracks in floorboards, and areas where pets frequent/sleep.
Diet & Feeding
They feed on organic matter found in dust, specifically 'flea dirt' (dried blood excreted by adult fleas), dead skin cells, and other debris.
Behavior Patterns
Flea larvae are negatively phototactic (avoid light) and will burrow deep into carpets or bedding. They spin a cocoon to pupate before emerging as adults.
Risks & Benefits
Risk: They develop into adult fleas which bite humans and pets, causing itching, allergic reactions, and potentially transmitting diseases or tapeworms. Benefit: None to humans or pets.
Identified on: 2/18/2026