Portrait of an Assassin fly.

Assassin flies, or robber flies, are a predatory insect that closely resembles a mosquito with the size of a dragonfly. This is one of the raptors of the insect world, swooping down and catching other insects in flight for a snack, like an eagle catching a mouse.
Looking this closely at insects brings to mind so many depictions of alien invaders from movies, and is most definitely a source of inspiration for H.R. Geiger's "Alien"