The seasonal forms of Heraclides cresphontes Cramer, 1777, and clarification o the status of H. c. pennsylvanicus F. H. Chermock & R. L. Chermock, 1945.

The purpose of this paper is to visually illustrate the difference between the spring and summer forms of Heraclides cresphontes and to clarify the status of Heraclides cresphontes pennsylvanicus as a spring form. H. c. pennsylvanicus was described from a series of specimens of the spring brood, taken at State College, Pennsylvania. Shiraiwa, et al (2014) published a summary of the status of pennsylvanicus. Spring brood individuals from several locations are illustrated here and contrasted against summer individuals in those same areas.