Chiasmocleis anatipes

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Chiasmocleis anatipes, known as the Santa Cecilia humming frog, is a small frog in the Microhylidae family. It is currently known from northeastern Ecuador and likely occurs in nearby parts of Peru and possibly Colombia. The name anatipes points to its duck-like feet, with very extensive webbing between the toes; fingers (except the first) have fringe but are not webbed. Males are tiny, about 1.8–2.4 cm long, while females known from a single specimen are about 2.5 cm. The body is slender, the snout rounded, and the eardrum is hidden. Both sexes have dermal spines on the back and near the cloaca, and males have chin spines. The dorsal color ranges from dull olive-green to dull brown with green or gold flecks; the upper arms are tan or orange; the belly is cream with large dark brown spots. This frog lives in lowland primary forest at 200–400 meters above sea level and is often found near semi-permanent ponds; it breeds in temporary ponds. It is a cryptic species that is believed to be relatively widespread but can be locally affected by habitat loss. It has been found in Yasuní National Park and the Jatun Sacha Biological Station.