Yellow-green Bush-tanager (Chlorospingus flavovirens) - HBW 16, p. 305
French: Chlorospin jaune-vert
Spanish: Clorospingo Verdiamarillo
Taxonomy: Buarremon flavovirens Lawrence, 1867, Pichincha, Ecuador.
Recent molecular-genetic studies indicate that this genus and Nesospingus, Spindalis and Phaenicophilus form a monophyletic clade that is sister to several New World warbler (Parulidae) genera (including Dendroica, Basileuterus and Vermivora), and are not closely related to other genera of present family. More recent evidence suggests that Chlorospingus is closest to genus Arremonops in family Emberizidae. Monotypic.
Distribution: SW Colombia (W slope of W Andes in upper Anchicayá Valley, in Valle del Cauca; Nariño) and Ecuador (in E Esmeraldas; Pichincha).
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