G. vitellina is very similar in appearance to the white-bellied frog (A. alba); having spots of dark brown on a light brown or grey back, with has a snout–vent length of 17–24 mm.
G. vitellina closely resembles the white-bellied frog (A. alba) in appearance; it has dark brown spots on its body and measures between 17 to 24 millimeters from snout to vent.