Comment by JumpCrisscross

> Except for all the living things that eat mosquitos, and which in turn get eaten by other things, or eat other pests besides mosquitoes

The mosquitoes that cause disease in humans are almost uniquely ecologically useless [1]. Particularly in North America, where the Aedes aegypti mosquito is "believed to have arrived to the Americas during the 17th century by ship during the slave trade" [2].

[1] https://www.nature.com/articles/466432a

[2] https://pmc.ncbi.nlm.nih.gov/articles/PMC5938790/