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.
Bombus dahlbomii
Bombus dahlbomii is a species of bumblebee endemic to southern South American temperate forests. "B. dahlbomii" is one of the largest bee species in the world, with matured queens growing up to long. Because of its size and furry appearance, the species has been described as "flying mice" and "a monstrous fluffy ginger beast".