"Lice" Cycles

Lice metamorphose in three developmental stages: egg, nymph, and adult. First the female louse lays an egg, commonly referred to as a nit. The eggs are sticky and glue themselves onto the hair shaft. About 10 days later they hatch into the nymph stage. Nymphs look like tiny adult lice. They feed on blood. The adult louse sucks blood and mates to produce more lice eggs.