Southern Emerald-Toucanet is resident from northern Colombia (Sierra Nevada de Santa Marta, Serranía de Perijá, and all three Andean ranges) and the Venezuela Andes south to Santa Cruz, Bolivia. It occurs on the Pacific slope only in Colombia; it is restricted to the east slope of the Andes from Ecuador south. Throughout most of this region it is primarily occurs in montane regions, with elevational ranges in Colombia of 1600-3000 m (Hilty and Brown 1986); in Venezuela of 1700-3100 m (Hilty 2003); and in Ecuador of 1500-2600 m (Ridgely and Greenfield 2001b). In northern Peru (south to San Martín), blue-throated cyanolaeumus ranges from 1200-2500 m, but the black-throated subspecies (atrogularis, dimidiatus) of southern Peru, western Brazil, and in northern Bolivia occur at lower elevations, from 200-1650 m (Walker et al. 2006, Schulenberg et al. 2010, Herzog et al. 2016).