About Ectemnius maculosus (Gmelin, 1790)
Ectemnius maculosus (Gmelin, 1790) is a species of square-headed wasp that belongs to the family Crabronidae. The native range of this species covers most of the eastern United States and the extreme southeastern part of Canada. There are also reports of this species being found outside its native range, across North America, Europe, and northern Asia, where it may be an introduced, adventive population.