Bug Identifier
Pubic Louse
Community identification

Pubic Louse

Pthirus pubis

Order & Family
Order: Psocodea; Family: Pthiridae
Size
1.1 mm to 1.8 mm (about the size of a pinhead)
See this bug in the Encyclopedia

Natural Habitat

Found exclusively on humans, typically in the pubic hair and coarse body hair like armpits, eyebrows, or beards.

Diet & Feeding

Obligate blood-feeders; they consume human blood several times a day to survive.

Behavior Patterns

They are sedentary compared to other lice, often remaining in the same spot for days after grasping hair. They spread primarily through close physical or sexual contact.

Risks & Benefits

Risks include intense itching (pruritus) and skin irritation caused by an allergic reaction to their saliva. They do not transmit diseases but are a common nuisance pest.