Robber Fly (Holcocephala fusca) Eating a Spider
Manually focus stacked from 3 photos taken at f/16 with the 50mm reversed on some extension tubes. The fly was around 6mm long.
I have uploaded this photo at a larger size (1600X1122) than I usually do as it really deserves to be seen at a larger size to appreciate the detail.
For more photos and info on this species, go to the bugguide page for Holcocephala fusca here: