Bug Identifier
Pubic louse
Community identification

Pubic louse

Pthirus pubis

Order & Family
Order: Psocodea, Family: Pthiridae
Size
1.1 to 1.8 millimeters in length
See this bug in the Encyclopedia

Natural Habitat

Exclusively on the human body, primarily in coarse body hair such as pubic hair, armpit hair, or eyelashes.

Diet & Feeding

Obligate hematophage; they feed exclusively on human blood several times a day.

Behavior Patterns

They are sedentary and grasp hair shafts with specialized claws. They cannot jump or fly and are usually transmitted through close physical contact or shared bedding.

Risks & Benefits

Causes intense itching (pruritus) and blue spots on the skin. They are not known to transmit diseases but the scratching can lead to secondary bacterial infections.