Males have a grayish chest and throat with a round vocal sac. These body areas are usually more spotted in males than females (Stebbins 1954).
Acris gryllus can be distinguished from other species of this genus by its longer hind legs and smaller degree of webbing on toes. Specifically, the webbing does not reach the tip of the first toe (Conant and Collins 1991).
- Conant, R. and Collins, J. T. (1991). A Field Guide to Reptiles and Amphibians: Eastern/Central North America. Houghton Mifflin, Boston.
- Behler, J. L. (1979). The Audubon Society Field Guide to North American Reptiles and Amphibians. Alfred A. Knopf, Inc., New York.
- Cochran, D. M. (1970). The New Field Book of Reptiles and Amphibians. G. P. Putnam's Sons, New York.
- Stebbins, R. C. (1954). Amphibians and Reptiles of Western North America. McGraw-Hill, New York.