Two subspecies usually recognized:
mexicanus Ridgway 1915
Occurs in western Mexico north of the Isthmus of Tehuantepec.
Similar to nominate erythropygus, but "larger and paler, the upper parts averaging more grayish olive, the under parts varying from cinnamon-ochraceous to dull light ochraceous-buff or even pale buff; under surface of tail, however, darker, showing, on lateral rectrices, less contrast between the grayish brown of proximal and blackish of sub-terminal portions" (Ridgway 1916: 73).
erythropyus (Lesson 1842).
Occurs from southern Mexico, south of the Isthmus of Tehuantepec, south to northwestern Costa Rica.
See Detailed Description.