The Fruit Fly Life Cycle

Know thy enemy! Common household fruit flies grow from egg to adult in just 8-10 days. There are four stages in this growth process; egg, larva, pupa, and adult. Following is a (very) brief description of each of them.

Stage 1: Egg Fruit flies can lay up to 500 eggs in their lifetime of less than two weeks! They will only lay their eggs in the surface of moist, organic material. They prefer fermenting and rotting fruits and vegetables. This is the weak point that we will use to eradicate them.

Stage 2: Larva Approximately 24 hours after an egg is laid, the fruit fly will emerge as a larva. This is where the fruit fly starts to take shape.

Stage 3: Pupa This final formative stage gives the fruit flies their wings and color. This is the final stage of metamorphosis. Soon theyll be buzzing around your house and crashing into your face as you walk into the kitchen! They may be the best at reproducing, but they sure cant fly very well.

Stage 4: Adult Once the fly is fully formed, it emerges as an adult and can begin reproducing in less than 2 days!

4 thoughts on “The Fruit Fly Life Cycle

  1. Can these fruit flies bite? I found 2 of them and as I swatted them off my wrist I was left with 2 welts of hives and had to use caladryl lotion to stop the sting & itch. Frist I thought they could have been fleas but they were fruit flies as I had some fruit on the t.v. cabinet stand like bananas and a couple of applies so then I realized they had to be fruit flies and not fleas. Needless to say I removed the fruit from my room and put the apples in the fridge and the bananas on the kitchen counter.

    1. No, fruit flies don’t bite. They secrete a liquid that is used to break down fruit prior to consuming it. It is possible you were allergic to that liquid. If you want to get rid of them, make sure you don’t leave any fruit lying around anywhere in the open.

  2. Why is it when these fruit flies only emerge when you’ve had fruit sitting out for awhile? When there were no fruit flies before. Do they already have their eggs on the fruit before it’s bought? Where do they come from??

    1. Fruit flies can enter your home in two ways. One way is just as you mentioned. The fruit you buy may already have eggs deposited on the skin. Then, after you buy it and bring it home, the eggs hatch. The other way is that the fruit flies come into your home after smelling your ripening fruit. It may be hard to believe but fruit flies can smell fruit from great distances. They follow this scent to your home and hunt for a way in. Because they are so small, it isn’t that hard for them to find a way in. A crack around a door or window is perfect for them to crawl through.

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