What is the most common type of ant found in North America?
Black garden ant
The black garden ant (Lasius niger), also known as the common black ant, is a formicine ant, the type species of the subgenus Lasius, found all over Europe and in some parts of North America, South America, Australia, Asia and Australasia. The European species was split into two species; L. niger is found in open areas, while L. platythorax is found in forest habitats.[1] It is monogynous, meaning colonies have a single queen.
Aphidius nigripes
Aphidius nigripes is a species of parasitoid wasp in the subfamily Aphidiinae of the family Braconidae. It is the most common parasitoid of the potato aphid "Macrosiphum euphorbiae" in eastern North America. Many other species of aphids may also serve as hosts.