Río Belén Poison Frog

This small frog is 11 to 13 mm long and smooth chrome orange skin. The feet do not have any webbing and females are slightly larger than the males. It possesses a rounded, slender snout with outward facing external nares. Darker pigmentation is observed on the lower mandible and betwixt the eyes.

The habitat of A. geminisae is lush rainforest. This animal is endemic to West Central Panama and relatives within the Dendrobatid (poison dart frog) family are similarly found across Panama as well as the Colombian Andes. It can be spotted under rocks, logs, near tree roots, and atop leaf litter on dry, elevated ridges. Up to 15 individuals have been recorded at populated sites in the Donoso region, specifically in a slight portion of the Rio Belén basin.

The call of this amphibian is buzz-like, with a relatively high amount of pulses per note and lower dominant frequency than advertisement calls of similar species such as the Andean and Blue-bellied poison frogs. Cupped leaves and tree hollows full of water are used as areas to lay their eggs. Bromeliads and pitcher plants have been shown preference. There is photographic evidence that the male Geminis' dart frogs carries its tadpoles on its back, as characteristic of the high parental investment by both sexes seen in all Neotropical poison frogs.