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The flame-colored tanager (Piranga bidentata), formerly known as the stripe-backed tanager, is a medium-sized American songbird in the family Cardinalidae, the cardinals or cardinal grosbeaks. It is found from Mexico throughout Central America to northern Panama and occasionally in the United States; four subspecies are recognized. The flame-colored tanager is 18 to 19 cm (7.1 to 7.5 in) long, the male having predominantly red-orange while the female is more yellowish orange.
English naturalist William Swainson described the flame-colored tanager in 1827 from material collected by William Bullock and his son from a specimen from Temascaltepec in Mexico. French ornithologist Frédéric de Lafresnaye described Piranga sanguinolenta as a separate species in 1839, though the two were generally regarded as conspecific by the end of the 19th century.
A 2019 genetic study using mitochondrial DNA showed that the flame-colored tanager was the sister taxon of the western tanager (P. ludoviciana).
The flame-colored tanager and the other species of genus Piranga were originally placed in the family Thraupidae, the "true" tanagers. Since approximately 2008 they have been placed in their current family.
