EEB384H1 Study Guide - Final Guide: Heterodon, Smooth Green Snake, Colubridae
3 Apr 2016
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Have warty skin and enlarged parotoid glands behind each eye: america toad, anaxyrus americanus: Parotoid glands are separated from the prominent cranial crests. Parotoid glands are in contact and not separated. Dark dorsal spots frequently encircle 3+ warts. Triangular black face mask, white line on upper jaw, brown/tan body. Smaller and more slender than ranids, enlarged toepads at digit ips, some have visible tympanum, most have webbed toes: northern cricket frog, acris crepitans. Warty, webbed toes, short legs, max 4cm. Green/brown/yellowish with dark triangular patch between eyes: gray treefrog, hyla versicolour. Warty green/brown/gray skin with large back blotches, max 6cm. Large toe-pads, white patch under eyes, bright yellow under thighs: spring peeper, pseudacris crucifer. Tan/light brown with dark x-shaped mark on back, ~3cm (smallest) Specimens in class have constricted limbs: western chorus frog, psuedacris maculate. Three dark back stripes (broken, dots, etc), max 4cm: boreal chorus frog, pseudacris triseriata. Smooth skinned, varying colour (similar to western)
