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.
Elizabeth Nesta Marks
Elizabeth Marks alone or jointly described 38 new mosquito species (for example, "Culiseta arenivaga" Marks, 1968), as well as new species of fruit flies, bugs, cockroaches and ticks. Another 43 species of mosquito identified by her, have yet to be described satisfactorily. She was well known for her practical streak, being able to solve problems with inventive solutions. She was equally famous for her Army metal soup ladle which was used to collect mosquito larvae and as an oar when an outboard motor might break down.