This hummingbird occurs on the eastern slope of the central Peruvian Andes. The male has an iridescent purple throat, and records come from humid mountain forest edges and nearby scrub.
The male is mostly dark green with an iridescent purple gorget. The female is green, with a reduced or absent gorget and white tips on the outer tail feathers. Tail color differs by subspecies, described as dusky in theresiae and green in parkeri.
On the eastern slope of the central Peruvian Andes it is recorded in humid elfin forest, along forest edges, and in associated shrubbery.
An extinction-risk assessment has not been added yet.