Additionally, the Prairie Research Institute’s Illinois Natural History Survey has an Derived from http://www.inhs.uiuc.edu/cbd/collections/amprep/ilspecies.html in July 2011. Frogs & Toads Identification The photo gallery at the bottom of the page provides information about common species of frogs and toads in Illinois. This is the distinguishable characteristics of the frog. Common Frogs and Toads of the Southern Illinois Region Illinois Anura found South of Illinois Route 64, USA Hylidae - Tree Frogs over 900 species on Earth most are arboreal have claw shaped terminal phalanges (last toe bone) because of cartilage between bones many have toe-pads to help climb found on every continent except Antarctica Acris blanchardi Frogs and Toads of Illinois Frogs True Frog Family – Ranidae American Bullfrog (Rana catesbeiana) The American Bullfrog is the largest native frog in the United States. All Illinois frogs and toads have a complex, biphasic life cycle. The plains leopard frog lives in the plains and prairies of central Illinois and in counties along the Mississippi River. There is no dorsal ridge that runs down its back on the American Bullfrog. Adults are aquatic, semi-aquatic, or terrestrial, but all species lay their eggs in water. This frog breeds with the onset of warm, spring rains. It looks for a cold stream to overwinter in and then moves to warmer ponds for breeding and then forests to These frogs are listed as a species of greatest need of conservancy in Illinois as it has a complex habitat requirements. Green Frog (Rana clamitans) The Green… Continue reading Frogs and Toads of Illinois