Here is another insect that I found in the Parachute Creek member of the Green River formation. I believe it is a wasp of the order Hymenoptera based on an image of a similar insect I found on this slide show. You can see the head, eyes, and antennae very clearly and the wings are somewhat visible too. The abdomen is not very detailed and may not have preserved as well. I also do not see any of the legs and maybe they are preserved under the body.
I collected this fossil near the FAA radar dome in Garfield County, Colorado near Douglass Pass. The Parachute Creek member of the Green River formation is Eocene in age, Lutetian stage (about 46 mya)