Caatinga Antwren

The Caatinga antwren (Radinopsyche sellowi) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is endemic to Brazil. == Taxonomy and systematics == What is now the Caatinga antwren was originally described as Herpsilochmus sellowi after decades of being treated as part of the Bahia antwren (H. pileatus) complex. A study published in 2000 resulted in its recognition as a separate species. A 2021 phylogenetic analysis determined that the species did not belong in Herpsilochmus and the authors coined the new genus Radinopsyche for it. The South American Classification Committee of the American Ornithological Society, the International Ornithological Committee, and the Clements taxonomy soon adopted the new genus. However, as of December 2023 BirdLife International's Handbook of the Birds of the World retains the species in Herpsilochmus. The Caatinga antwren's English name derives from its principal habitat. Its specific epithet honors Friedrich Sellow for his "important collections of natural history specimens from eastern Brazil, which numbered approximately 5,457 birds" and numerous mammals, invertebrates, plants, and geological materials. The Caatinga antwren is the only member of its genus and has no subspecies. == Description == The Caatinga antwren is 10.5 to 11.5 cm (4.1 to…