- Order: Passeriformes
- Family: Thamnophilidae
Paulo Afonso, Bahia, Brazil; 31 December 2010 © Stephen Jones
The Caatinga Antwren has only recently been recognized, primarily on the basis of its vocalizations, as a separate species from the Bahia Antwren (Herpsilochmus pileatus); they were formerly united under the name Pileated Antwren. It is endemic to caatinga scrub and the borders of deciduous woodland in northeast Brazil, south as far as northern Minas Gerais, where it comes into contact with the similarly-plumaged but larger and longer-tailed Black-capped Antwren (Herpsilochmus atricapillus). The present species is less arboreal and generally forages closer to the ground than the Black-capped Antwren, which mainly tends to remain in the canopy. The species’ scientific name pays homage to an early German botanist and collector of birds who travelled extensively in eastern Brazil, Frederich Sellow.
. 2010. Caatinga Antwren (Herpsilochmus sellowi), Neotropical Birds Online (T. S. Schulenberg, Editor). Ithaca: Cornell Lab of Ornithology; retrieved from Neotropical Birds Online: http://neotropical.birds.cornell.edu/portal/species/overview?p_p_spp=380691