Bug Identifier
Pubic louse
Community identification

Pubic louse

Pthirus pubis

Order & Family
Phthiraptera, Pthiridae
Size
1.1 to 2.0 millimeters long.
See this bug in the Encyclopedia

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.