Mosquito
Mosquitoes of the genus "Toxorhynchites" never drink blood. This genus includes the largest extant mosquitoes, the larvae of which prey on the larvae of other mosquitoes. These mosquito eaters have been used in the past as mosquito control agents, with varying success.
List of largest insects
Insects, which are a type of arthropod, are easily the most numerous group of multicellular organisms on the planet, with about a million species identified so far. The title of heaviest insect in the world has many rivals, the most frequently crowned of which is the larval stage of the goliath beetle, "Goliathus goliatus", the top size of which is at least and . The largest confirmed weight of an adult insect is for a giant weta, "Deinacrida heteracantha", although it is likely one of the elephant beetles, "Megasoma elephas" and "Megasoma actaeon", or goliath beetles, both of which can commonly exceed and , can reach a higher weight.