Sapphire-spangled Emerald
Photo © Christoph Moning
Photo © Christoph Moning — CC BY 4.0 — Source: iNaturalist photo #330283376The sapphire-spangled emerald (Chionomesa lactea) is a species of hummingbird in the "emeralds", tribe Trochilini of subfamily Trochilinae. It is regularly found in Bolivia, Brazil, Peru, and Venezuela; as a vagrant in Argentina; and has possibly occurred in Ecuador. == Taxonomy and systematics == The sapphire-spangled emerald has at various times been placed in genera Hylocharis, Polyerata, and until 2014 in Amazilia. A molecular phylogenetic study published in 2014 found that Amazilia was polyphyletic. In the revised classification to create monophyletic genera, the sapphire-spangled emerald and glittering-throated emerald (Chionomesa fimbriata) were moved by most taxonomic systems to the resurrected genus Chionomesa that had been introduced in 1921 by Eugène Simon. However, BirdLife International's Handbook of the Birds of the World (HBW) retains it in Amazilia. The South American Classification Committee of the American Ornithological Society (SACC), the International Ornithological Committee (IOC), and the Clements taxonomy assign these three subspecies to the sapphire-spangled emerald: C. l. zimmeri (Gilliard, 1941) C. l. lactea (Lesson, R.) C. l. bartletti (Gould, 1866) The HBW taxonomic system treats C. l. bartletti as a separate species, the spot-vented emerald (Amazilia bartletti). Some taxonomists have suggested that C. l. zimmeri should also be treated as a species…
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