phtheir-, phtheiro-, phthiri-, phthirio-

Lice; an order of wingless hemipterodean insects comprising two groups: Anoplura (sucking lice) and Mallophaga (chewing lice), often classified as distinct orders; lacking eyes and with antennae reduced.

Infestation with any type of human lice.

Eating lice.

1. A genus of sucking lice belonging to the order Anoplura.
2. True lice or crab lice.

The crab louse.

It infests primarily the pubic region but it may also be found in armpits, beard, eyebrows, and eyelashes.