Notes on North American Nitidulidae, III: Phenolia, Soronia, Lobiopa, Amphotis

Erichson, who erected the genera Phenolia, Soronia, Lobiopa, and Amphotis, in 1843, had a clearer idea of their relationships than subsequent workers. For instance, Reitter placed Phenolia, and Lobiopa in Soronia; whereas Horn suppressed Amphotis as well as Lobiopa but resurrected Phenolia. Later Sharp and then Grouvelle, without giving reasons, raised them all to the good standing they have had subsequently. Since all of the writers have made mistakes in their diagnoses and since their descriptions have been incomplete, the genera are here redescribed.