Body Louse
Scientific Name: Pediculus humanus humanus
Order & Family: Order: Psocodea; Family: Pediculidae
Size: 2.5 to 3.5 mm in length

Natural Habitat
Typically found on human clothing, particularly in seams and folds, moving to the skin only to feed.
Diet & Feeding
Obligate blood-feeders that consume human blood multiple times a day.
Behavior Patterns
They are highly contagious and spread through close person-to-person contact or shared clothing. Females lay eggs (nits) in the seams of clothing.
Risks & Benefits
Risk: They are vectors for serious diseases such as epidemic typhus, trench fever, and relapsing fever. They cause intense itching and skin irritation. Benefits: None.
Identified on: 1/10/2026