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Definition and revision of spumarius species-group of North American Pachybrachis Chevrolat (Chrysomelidae: Cryptocephalinae)
By Barney, R.J.
The Coleopterists Bulletin 71(3): 449-460., 2017
Cite: 1447842 with citation markup [cite:1447842]
BioOne

Barney, R.J. 2017. Definition and revision of the spumarius species-group of North American Pachybrachis Chevrolat (Coleoptera: Chrysomelidae: Cryptocephalinae). The Coleopterists Bulletin 71(3): 449-460.

Abstract
The spumarius species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of one species: Pachybrachis spumarius Suffrian, 1852. A male specimen of P. spumarius, recently discovered in the Natural History Museum in London among some previously unrecognized type material of Suffrian, is herein designated as a lectotype. The synonymy of Pachybrachis roboris Fall, 1915 with P. spumarius is confirmed, and Pachybrachis obfuscatus Fall, 1915 is synonymized under P. spumarius, new synonymy. A description, figures, and range map are presented.