How does a mosquito differ from a fly?

They are different insects, though of the same order (Diptera). Flies do not need blood to form their eggs, though some species feed on blood (like the tsetse fly). read more

From a taxonomical point of view, mosquitoes belong to the Family Culicidae, while the common house fly belongs to the Muscidae Family. That doesn’t mean much to the naked eye of a casual observer. They are both considered pests, have been flying around us for centuries and with all probability will continue that way for the rest of our existance on earth. read more

A mosquito bite may also produce a burning sensation and turn into a large welt. Sand fly bites typically occur in clusters. Their bites are very painful. A bite from a small sand fly can be more painful that the bite of a large mosquito. Sand fly bites can also produces rashes and cause fevers in their victims depending on the tolerance to the bite. read more

A Mosquito is a type of fly. Mosquitos bites mammals for blood. Houseflies do not, but instead get nourishment from scraps. read more