These maggots are unsavory but harmless.
Attic fly life cycle.
The cluster fly life cycle begins when a female lays her eggs in the soil in late summer or early fall.
These eggs hatch within a few days after which larvae seek to enter the body cavities of earthworms.
Life cycle of cluster flies.
The female house fly can lay anywhere from 75 to 150 eggs in a batch.
She can lay an estimated five or six batches of eggs during her lifetime starting on average about 12 days after reaching full maturity.
Life expectancy of house flies.
Life cycle of blow and flesh flies blow flies and flesh flies are attracted to recently deceased animals where they lay their eggs.
Most commonly they move from the ground to your attic for the winter when it gets cold.
Thus the common name they have of attic flies.
Within two to three days female house flies are capable of reproduction.
Gestation of a house fly.
What do they eat.
Cluster flies develop as parasites inside the bodies of earthworms.
The life cycle of a fly begins with the egg.
Over the course of three to six days the pupae develop legs and wings ultimately emerging as full grown house flies.
By instinct they seek shelter away from the elements such as in the fall when it gets cold.
Cluster flies do not reproduce indoors and home owners bothered by these pests do not need to fear the flies are hatching from a dead animal or other unpleasant material within the attic or walls.