Flea Eggs and Larva
The flea life cycle begins when the female lays eggs after feeding in batches of up to 20 or so, usually on the host itself, Between two days to two weeks flea larvae emerge from the eggs to feed on any available organic material such as dead insects, feces, and vegetable matter. After another week or two, the adult flea is fully developed and ready to emerge from the cocoon, though they may remain resting during this period until they receive a signal that a host is near, such as vibrations (including sound), heat, or carbon dioxide.
• Because the female flea lays her eggs on the host, the eggs can easily roll onto the ground, which means areas where the host rests and sleeps become one of the primary habitats of eggs and developing fleas.
• Flea larvae are blind and avoid sunlight, keeping to dark places like sand, cracks and crevices, and bedding.
• Given an adequate supply of food, larvae will pupate and weave a silken cocoon within 1–2 weeks after 3 larval stages.