Posts Tagged ‘Striped Horse fjy’

When I first encountered two insects this past weekend at Huntley Meadows Park, I thought they were mating. Looking a little closer, I realized it was a robber fly and its prey, which, after some research, I conclude is probably a Striped Horse Fly (Tabanus lineola). In addition to its unusual eyes, check out the sharp mouth parts of the horse fly that are used, I believe, for biting. Ouch!

There is a whole family of robber flies, known as Asilidae, of varying sizes and shapes, including the Red-footed Cannibalfly that I have featured several times recently. This robber fly was considerably smaller than a Red-footed Cannibalfly, but has many of the same general characteristics. They both grasp their prey with their long legs and inject it with saliva that paralyzes the victim. The saliva eventually liquifies the insides of the prey and the robber fly sucks out the liquified material through its proboscis. I think that the robber fly in the photo was in the middle of that process when I spotted it.

Robber Fly

© Michael Q. Powell. All rights reserved


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