New World Warblers (Parulidae)

Rufous-capped Warbler (Basileuterus rufifrons) - HBW 15, p. 793

French: Paruline à calotte rousse German: Rotkappen-Waldsänger Spanish: Reinita Coronirrufa
Other common names: Chestnut-capped/Delattre's Warbler ("yellow-bellied group"); Salvin's Warbler (salvini)

Taxonomy: Setophaga rufifrons Swainson, 1838, Mexico.
Races form two groups, the "yellow-bellied group" group (delattrii, mesochrysus and actuosus), occurring S from S Guatemala, and "white-bellied group" (remaining five races), from Mexico to C Guatemala and Belize. Groups sometimes treated as two separate species, with some vocal differences, but they apparently interbreed extensively in Guatemala, and possibly also in extreme S Mexico (SE Chiapas), El Salvador and Honduras; further, race salvini intermediate in plumage between the two groups, also linking them geographically. Eight subspecies recognized.

Subspecies and Distribution:

caudatus Nelson, 1899 - NW Mexico (Sonora and W Chihuahua S to N Durango).
dugesi Ridgway, 1892 - C Mexico (S Sinaloa and W Durango S to S Puebla and W Oaxaca).
jouyi Ridgway, 1892 - NE Mexico (Nuevo León and W Tamaulipas S to E Hidalgo and C Veracruz).

See all 8 subspecies

caudatus Nelson, 1899 - NW Mexico (Sonora and W Chihuahua S to N Durango).
dugesi Ridgway, 1892 - C Mexico (S Sinaloa and W Durango S to S Puebla and W Oaxaca).
jouyi Ridgway, 1892 - NE Mexico (Nuevo León and W Tamaulipas S to E Hidalgo and C Veracruz).
rufifrons ( Swainson, 1838) - highlands of S Mexico and C Guatemala.
salvini Cherrie, 1891 - S Gulf slope in S Mexico (S Veracruz, N Oaxaca), N Guatemala and S Belize.
delattrii Bonaparte, 1854 - S Guatemala (probably also extreme SE Chiapas, in adjacent Mexico) S to C Costa Rica.
mesochrysus P. L. Sclater, 1860 - S Costa Rica S to N Colombia and extreme W Venezuela.
actuosus Wetmore, 1957 - Coiba I, off S Panama.