Bee Mimic Hummingbird Moth

notice the spiral proboscis in one of these pics. Only moths and butterflies have them.

Golden-backed Snipe Fly (Rhagionidae)

A snipe fly (Chrysopilus thoracicus) hanging out on a brick wall in Chesterfield County in June 2015.

Big Bug-eyed Black Fly

This black fly is about 1" long.
Biggest fly I ever saw. 
This was at Three Lakes Park in Henrico County in 2013.

Tiny Fly that looks like a bee

This tiny fly is only about 3/16" long  (approx 3 to 4 mm) .
It is sitting on a mint leaf in my front garden.  I took the picture this morning!