Found at a lighted wall, size estimated. I thought this was a Cylindromyia at first, but it looked somewhat different from others in the guide, and I was (for once on a fly) correct in my doubts. Quoting from Herschel Raney's key to eastern tachinids, which is excerpted from the Manual of Nearctic Diptera:
205. Palpus present. Vibrissae arising distinctly above lower margin of face. Legs yellowish basally, darkened apically--> Xanthomelanodes 2nd Townsend (3/5)

205. Palpus absent. Vibrissae level with lower margin of face. Legs entirely dark--> Cylindromyia Meigen (11/17 in 5 subgenera)

I think it would be hard to see the palpus (a mouthpart) on most photos, but it should be easy to see legs and often the vibrissae (with a shot of the face). This photo shows the yellow base of the legs, and also the vibrissae on the upper portion of the face (only), I think. See discussion under this image as well:


Search for photos from gathering_2008.