About Camponotus pennsylvanicus (De Geer, 1773)
Camponotus pennsylvanicus, commonly called black carpenter ants, can be distinguished from other carpenter ant species by the dull black color of its head and body, and by whitish or yellowish hairs on its abdomen. All castes of this species, including major and minor workers, queens, and males, are black or blackish. This species is polymorphic, meaning workers vary in size. Queens can reach a length of 19 to 21 mm, and the largest workers, known as super majors, can grow to similar sizes, around 14 to 17 mm. Along with several other Camponotus species, it is among the largest ant species found in North America. Like all ants, its antennae are geniculate, or elbowed. Workers usually have 12 antenna segments. Winged reproductive alates of this species typically have yellowish wings. Black carpenter ants occur across nearly all areas east of the Rocky Mountains, living in woodlands, forest edges, and suburban communities.
