The dorsum is orange to brown, often with small dark spots especially in young individuals. Light canthal and dorsolateral stripes are always present and are usually outlined in black, and in some cases yellow as well. The dorsolateral stripes extend midway down the dorsum and in some individuals reach the groin. A light spot is present on each heel. The ventral surface of males may be yellow or orange, but in females is typically orange. Males have a yellow gular flap (Text from Harper et al., 2010).
H. mitchelli can be distinguished from H. puncticulatus by the light spots on the heels.
Males are 23–27 mm in snout-vent length, while females are 25–32 mm (Harper et al., 2010).
This species is found in dry and moist forest at elevations up to 1200 m, and it is also found in degraded habitats, including gardens (Harper et al., 2010).
Clutches of 50–100 eggs are laid on vegetation over water. Tadpoles hatch after five or six days (Text from Harper et al., 2010).