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Large brown fly (Giant Robber fly)

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Giant Robber fly
by: Moni

Carl
Yes, your fly is a robber fly. Because you said it is so large it is one of the Giant robber flies. Tiger stripping on the abdomen would tell us that for sure, but is not shown in the photo.

Robber flies and larvae are predatory on other insects. These wasps often feed on insects in the bee and wasp group. The eggs are typically laid on the ground near grass roots. Larvae burrow into soil, feed on soil insects, roots, and decaying matter. Pupation is in an unlined cell in the soil.
These are found in eastern US.

Here are photos of this genus - http://bugguide.net/node/view/3026/bgimage


Robber Fly?
by: Anonymous

It looks more like a Robber Fly than a Horse fly to my eye, but I could be wrong.

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