The eggs quickly hatch into maggots which consume and break down the corpse. Fruit flies can lay up to 500 eggs at a time near the surface of fermenting (ripening) foods or other organic materials. Where Do Fruit Flies Come From, and How Long Do They Live? They are also known for burrowing themselves into the animal carcass and lay eggs there. Blow fly. Fruit fly. Filth flies include the common house fly, drain flies and blow flies. The eggs can be in different shapes or sizes as it can depend on the species. It took like 3 minutes to get it off (my friend got it off and I think it dropped on the ground). I was sitting outside today and a huge fly flew on top of my laptop case. The entire life cycle from egg to adult takes only about eight to 10 days so they proliferate with great rapidity. Most fly eggs are laid in almost any warm, moist material that will provide food for the larvae (maggots). Lol, i was just wondering "do flies lay eggs when they eggs they land".some people have said that before so i really want to know. The eggs are white and are about 1.2 mm (0.05 in) in length, and they are deposited by the fly in a suitable place, usually dead and decaying organic matter, such as food waste, carrion, or faeces. The fly will lay its eggs anywhere it feels like the maggots will be safe and well-fed. They lay eggs on wet decaying organic matter, on animal manure, and in rotting plant debris. Shiny, metallic flies. thank you for answering this. Fly eggs (maggots) are commonly pale white in color. Called blow flies because their larvae develop inside dead animals, causing the carcasses to bloat. Blow flies are usually the first insects to attack a dead animal carcass. In addition to these, adult blow flies also consume garbage, or feces. I tried to swat it away, but it did not move at all. Reproductively mature female blow flies use very low concentrations of dimethyl trisulfide (DMTS) in combination with dark animal pelt mimicking colours (black and reddish brown) to rapidly locate the corpse. read more There are larval and pupal stages, and it takes approximately 14 to 36 days for the eggs to morph into flies. Each female housefly can lay up to 500 eggs in a lifetime, in several batches of about 75 to 150. Understanding eating and breeding patterns of certain flies can help when you need to eliminate their populations. It is especially important to know where certain species lay their eggs. Bottle flies mostly like to eat fresh or decaying meat. Blow flies lay their eggs on recently deceased animal corpses. They lay their eggs on dead animal carcasses, decaying meat, and garbage that contains meat scraps. My question is, could it have laid eggs on my laptop case since the fly didn't move at all? This is why it’s so common to see them in old or rotting food. Flies lay eggs that hatch into maggots after 24 hours. There are several types of pest flies found in North American homes.