Three subspecies recognized:
pinicola, described as Heliomaster pinicola by Gould (1853); type locality northern Mexico
Occurs in northwestern Mexico, south to Jalisco.
Subspecies pinicola is similar to nominate constantii, but is paler on the underparts, with the red of the gorget less extensive (Stiles 1999).
leocodiae, described as Trochilus leocadiae (Bourcier and Mulsant 1852). Type locality Mexico, restricted to Acapulco, Guerrero by van Rossem 1934
Occurs from southwestern Mexico south to western Guatemala.
Subspecies leocadiae has a pinker gorget than pinicola; the underparts are intermdiate, darker than those of pinicola but paler than in nominate constantii (Stiles 1999).
constantii, described as Ornismya constantii (Delattre 1843). Type locality Guatemala, but this considered an error, and Bolson, Costa Rica substituted by Griscom (1932: 210).
Occurs in El Salvador (where intergrades with leocadiae; Dickey and van Rossem 1938), Honduras (where "show[s] some tendency of intermediacy towards leocadiae": Monroe 1968), Nicaragua, and northwestern Costa Rica.
See Detailed Description.