A review of the available evidence related to the descriptions of Papilio pegala F. and Papilio alope F. (now generally recognized as Cercyonis p. pegala and C. pegala alope, respectively) reveals that the suggested type localities of these nominal taxa are untenable for the reasons originally given. The vicinity of Charleston, South Carolina, is retained for P. pegala, but for different reasons than those first proposed. Based on an eighteenth century illustration in “Jones' Icones,“ the Georgia type locality for P. alope is revised to the vicinity of New York, New York, and a lectotype is designated. Additional nominal taxa are discussed, including Satyrus alope var. maritima W. H. Edwards, Satyrus nephele var. olympus W. H. Edwards, Cercyonis pegala race borealis F. Chermock, Cercyonis alope Carolina F. Chermock & R. Chermock, Cercyonis alope ochracea F. Chermock & R. Chermock, Cercyonis pegala abbottii F. Brown, and Cercyonis pegala agawamensis Arey & Grkovich. The holotypes of C. p. borealis, C. a. Carolina, and C. a. ochracea are figured for the first time. Perceived morphological trends within C. pegala in eastern North America are mapped, revealing a broad clinal blend zone in the southeast and an extensive contact zone northward, which partly exhibits characteristics of a mosaic hybrid zone. Evidence suggests that temperature may influence phenotypic expression in C. pegala. Based strictly on wing pattern, an arrangement is proposed that recognizes four subspecies of C. pegala in eastern North America.
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