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.
Attacus atlas
The Atlas moth is one of the largest lepidopterans with a wingspan measuring between and a wing surface area of about 400 cm (62 in). It is only surpassed in wingspan by the white witch ("Thysania agrippina") and in wing surface area by the Hercules moth ("Coscinocera hercules"). As in most Lepidoptera, females are noticeably larger and heavier than males, while males have broader antennae.