Northern Leopard Frog Lithobates pipiens  (Schreber, 1782)
An adult specimen from Indiana Image © Suzanne L. Collins, 2001
Taxonomic Comments:
Frost, Grant, Faivovich, Bain, Haas, Haddad, De Sá, Channing, Wilkinson, Donnellan, Raxworthy, Campbell, Blotto, Moler, Drewes, Nussbaum, Lynch, Green & Wheeler (2006. The Amphibian Tree of Life. Bulletin of the American Museum of Natural History 297: 1-370) placed this species in the genus Lithobates (Fitzinger, 1843). The standard common name remains Northern Leopard Frog. Di Candia, M. Rita & Eric J. Routman (2007 Cytonuclear discordance across a Leopard Frog contact zone. Molecular Phylogenetics and Evolution. 45: pp. 564-575) demonstrated a hybird contact zone between this taxon and Lithobates (formerly Rana) blairi.