Over 100,000 different species of flies exist.¹⁾

Fly species include horseflies and mosquitoes. These fly species' females consume blood.²⁾

More diseases are carried by urban flies than by those in rural settings.³⁾

At least 65 dangerous illnesses, including cholera, leprosy, dysentery, yaws, stomach ulcers, and typhoid fever, can be spread by houseflies.⁴⁾

The housefly and blowfly collectively transport more than 600 distinct bacterial species. 351 different bacterial species are carried by houseflies. About 316 are carried by the blowfly.⁵⁾

A fly will vomit if it lands on food, such as your meal. To enable the fly to suck up the meal, the vomit's acids disintegrate it.⁶⁾

Certain types of flies, including screw flies and botflies, may deposit their eggs in intact skin. The eggs grow up until a fully developed fly emerges from the host's skin.⁷⁾

Across 125,000 different types of dipteran, or “real” flies, may be found all over the planet, even in the subarctic and high mountains.⁸⁾

Gnats, midges, mosquitoes, leaf miners, horseflies, houseflies, blowflies, bee flies, and robber flies are all included under the term “fly”.⁹⁾

Although dragonflies, caddisflies, and mayflies have wing structures that are distinct from those of real flies, they are not actually recognized to be flies.¹⁰⁾

Adult houseflies have a lifespan of 15 to 25 days. Some people have been known to live up to two months.¹¹⁾

In just one month, a female fly may produce up to 2,000 eggs. Only 10 days are needed for the eggs to fully mature. In warm temperatures, their reproductive rate accelerates.¹²⁾

The ommatidia—thousands of microscopic lenses—in a fly's eyes. Fly eyes enable them to view in 360 degrees at once.¹³⁾

The Nematocera, which contains mosquitoes and non-biting flies, and the Brachycera are the two main groups of flies (which includes houseflies, fruit flies, and horseflies).¹⁴⁾

Houseflies only have one set of wings with a membrane, in contrast to other insects. They have less wings on their second set, which they employ for balance.¹⁵⁾