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northern cricket frog
The northern cricket frog (''Acris crepitans'') is a species of small hylid frog native to the United States and northeastern Mexico. Despite being members of the tree frog family, they are not arboreal. It has three recognized subspecies.
== Description ==
The northern cricket frog is one of North America's two smallest vertebrates, ranging from long. Its dorsal coloration varies widely, and includes greys, greens, and browns, often in irregular blotching patterns. One New York biologist has identified six distinct color morphs and four pattern morphs, and several intrergrades between these.〔(Westerveld,1977).〕 Typically there is dark banding on the legs and a white bar from the eye to the base of the foreleg. The skin has a bumpy texture. It is very similar to the southern cricket frog, ''Acris gryllus'', found in the US Southeastern Coastal Plain, but with some overlap along the fall line. The southern cricket frog has longer legs, with less webbing on the hind feet, and a more pointed snout; northern cricket frogs have been observed with snouts indistinguishable from those of the southern species.〔(Westerveld, 1998).〕 The line on the back of its thigh is typically more sharply defined than that of the northern cricket frog.〔(Conant et al. 1998, Martof et al. 1980).〕 Biologists have recorded northern cricket frogs in the northern fringes of their range with extremely sharp posterior leg stripes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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