The mosquitoes are a family of small, midge-like flies: the Culicidae. Although a few species are harmless or even useful to humanity, most are a nuisance because they suck blood from vertebrates, many of them attacking humans. In feeding on blood various species of mosquitoes transmit some of the most harmful human and livestock diseases.
Over 3,500 species of mosquitoes have already been described from various parts of the world. it's all over the world!!
found it on my desk,very still.I think its wing is broken because it cannot fly.