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.
Eilat virus
When tested on four different mosquito species the "Eilat virus" had similar effects on certain organs of the mosquitos and did not infect other organs. This bar graph shows the percentage of the specified mosquito species infected by the EILV in several different organs of the host. The virus's main hosts are mosquitoes, however it does have the ability to infect other insect cells. The "Eilat viruss incapability of entering vertebrate cells was proven by infection with the EILV-expressing red fluorescent protein"' which was obtained from a second genomic promoter. The red fluorescent protein was promptly observed in mosquito cells and unseen in vertebrate cells.