Enicospilus sp..
 
 
 
Size: approx. 30 mm. Photo: 08/28/14, 10 pm.


A really big Ichneumon Wasp with a somewhat pre-historic appearance. The wasp was attracted to our porch lights and then rested on our living room window for a while. The genus Enicospilus has twelve species in North America. This one seems to belong to the americanus group. A high-resolution version of the photo is available here
 

 
bug guide (this photo):
http://bugguide.net/node/view/986757