Choose the description that best fits the animal of interest.  If none
fit go back to question 19.

21a.  large blotches sometimes forming irregular star pattern, 
dark-edged light spot under the eyes, bright yellow-orange colouration under 
thighs, skin rough,  Manitoba, Ontario and Quebec only

                    go to Gray Treefrog Group

21b.  black stripe through eye, may have dark triangle between eyes,
British Columbia only

                    Hyla regilla (Pacific Treefrog)  

21c.  dark triangle between eyes, dark stripes on back of thigh, no
bright yellow-orange colouration under thighs, skin rough, Pelee 
Island only

                    Acris crepitans (Northern Cricket Frog)