
Community identification
Pubic louse
Pthirus pubis
- Order & Family
- Phthiraptera, Pthiridae
- Size
- 1.1 to 2.0 millimeters long.
Natural Habitat
Human pubic hair and occasionally other coarse body hair such as eyelashes, beard, or chest hair.
Diet & Feeding
Exclusively human blood, feeding multiple times daily.
Behavior Patterns
Spends its entire life cycle on a human host, clinging tightly to coarse hairs and laying eggs called nits at the base of the hair shaft.
Risks & Benefits
Causes severe itching, skin irritation, and secondary infections from scratching. Transmitted primarily through close physical or sexual contact.