It is known from Amazonian Bolivia, Brazil, and Peru, and is likely to be found in adjacent Colombia and Ecuador.

The flanks and ventral surfaces are bluish white with dark purple between the granules.

[3] C. atelopoides occurs in lowland primary tropical rainforest at elevations less than 200 m (660 ft) above sea level.

[1][3] The eggs are deposited on leaves and the tadpoles develop in temporary bodies of water.

It is a widespread but uncommon species that can locally suffer from habitat loss caused by, e.g., logging and agriculture.