About the White-shouldered Tanager
The white-shouldered tanager (Loriotus luctuosus) is a species of bird in the family Thraupidae, the tanagers and allies. It is found from Honduras to Panama, on Trinidad, and in every mainland South American country except Argentina, Chile, Paraguay, and Uruguay.
The white-shouldered tanager was formally described in 1837 with the binomial Tachyphonus luctuosus. A molecular phylogenetic study published in 2014 found that Tachyphonus was polyphyletic. In the subsequent reorganization the genus Loriotus was resurrected for the white-shouldered tanager and two other species. The genus had been introduced in 1821 by the Polish zoologist Feliks Paweł Jarocki.
The IOC, AviList, the Clements taxonomy, and the North and South American Classification Committees have adopted the new genus. However, in 2016 BirdLife International's Handbook of the Birds of the World (HBW) instead assigned the white-shouldered tanager and the other two species to the genus Islerothraupis and retains them there as of late 2025. Wikipedia →