What does mosquito look like? – All mosquito species have one pair of scaled wings with a pair of halteres. Mosquitoes have slender bodies with long legs. While their size varies by species, most mosquitoes are smaller than 15 mm in length and weigh less than 2.5 mg. Although mosquitoes appear fragile, they are extremely resilient insects whose females may draw blood from a variety of animals. This video is showing how mosquito look like.