Hummingbirds (Trochilidae)

Violet-tailed Sylph (Aglaiocercus coelestis) - HBW 5, p. 659

French: Sylphe à queue violette German: Langschwanzsylphe Spanish: Silfo Celeste

Taxonomy: Cynanthus cœlestis Gould, 1861, Ecuador.
Genus name formerly given as Cyanolesbia, but this is not applicable. Forms a superspecies with A.kingi and A. berlepschi. Formerly treated as a race of A. kingi, but morphology and range, especially altitudinal distribution, indicate species status more apt; female notably different from that of A. kingi. Proposed race pseudocoelestis best considered synonymous with nominate, since morphological differences are superficial. Two subspecies currently recognized.

Subspecies and Distribution:

  • coelestis (Gould, 1861) - Pacific slope of W Andes of both Colombia and N & C Ecuador.
  • aethereus (Chapman, 1925) - SW Ecuador, S from Zaruma.