This taxon is Not Recognised as a species by BirdLife International.
Rhodopechys sanguineus (Sibley and Monroe 1990, 1993) has been split into R. sanguineus and R. alienus following Kirwan et al. (2006) and Tobias et al. (2010), who split the form aliena on the basis of longer bill and tarsus (score 1) and shorter tail (score 2); face less red, none before supercilium, no pink tips to rump, less pink in wing (score 2), male with more restricted black on cap (1), chin and throat grey-white plus breast-band spotted (1), and several other differences which cannot be scored.
BirdLife International (2016) Species factsheet: Rhodopechys sanguineus. Downloaded from http://www.birdlife.org on 03/12/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 03/12/2016.