The generic and genetic relations of Pseudacris, the swamp tree frogs. American Museum novitates ; no. 70

Abstract

"No characters exist to distinguish Pseudacris from the short-webbed neotropical species of Hyla. (2) Pseudacris has undergone an evolution parallel to this group of hylas. (3) The species of Pseudacris must be referred to Hyla, although all species are distinguished from American hylas on external characters. (4) In referring these species to Hyla, certain names are found to be preoccupied, and the following names have been proposed: H. canadensis for P. septentrionalis; H. weberi for P. copii"--P. 6.