First your statement that they are not the main part of any diet is false, instead of blindly believing things, look it up for yourself...Hyldago said:i heard about a scientific study that prooved mosqitoes were the only living thing that wasn't the main part of the diet of any other organism. Basically the mosqitoe could be completely eradiacted and while there would be an imballance in the food chain it would recover. On ther other hand mosqitoes do help to controll the human population ie. by spreading deases and making the outside less appealing therefor promoting obesety.
Fun fact: The femal mosqitoe is the blood sucking monster whilst the male mosqitoe's only purpose is to reproduce...
"The dragonfly nymph eats mosquitoes at all stages of development and is quite effective in controlling populations."
http://en.wikipedia.org/wiki/Toxorhynchites