Small (less than 1/4 inch) wasps of varying shades of dark gray and black. The abdomen has a light ring around it in the middle. Wings are clear
Common in the Amazon rainforest of SE Ecuador. They build their nest on flat surfaces, only 1 layer deep.
This example is on the side of a cement block building. It is exposed to rain but not sun. That may be by coincidence, or not.
Lat: -2.15, Long: -77.69
Spotted on Jul 6, 2011
Submitted on Jan 29, 2019