Lice

Lice. Lice thrive in dry, dusty climates where sanitation is poor. These tiny insects are parasites with flat, colorless bodies. They cling to animals, humans, or plants, sucking blood or sap. The Egyptian nobles and priests shaved their heads and beards so lice could find no hiding place on their bodies. An infestation of lice, the third plague of the Exodus, must have been particularly bothersome to them (Ex. 8:16-18), (gnats, RSV, NIV, NASB; maggots, NEB).

Source: [Anon-Animals]

See also Maggot,

Lice is a type of insect that lives in the hairy parts of animals and people, eating and living off of them as a host. In the Bible it is associated with evil.