Black-legged dart frog
The adult male frog is 32.1-39.5 mm long from nose to rear end and the adult female frog is 35.7-42.7 mm.  It has large disks on its toes for climbing.  Young frogs have stripes on their sides.  In some groups of this frog, the stripes go away when the frog is an adult.  In other places, the adult frogs keep their stripes.