Ruddy Foliage-gleaner (Automolus rubiginosus) - HBW 8, p. 347

Taxonomy: Anabates rubiginosus P. L. Sclater, 1857, Córdoba, Veracruz, southern Mexico.
No obvious sister-species in genus. Vocal and substantial morphological differences between Guianan Shield race obscurus and other races suggest that at least two species are involved; vocalizations of many of the distinctive races are unknown. Black-tailed races nigricauda and saturatus formerly considered to represent a separate species. Proposed race umbrinus, described (from Guatemala) as like nominate but paler and redder above and paler below, considered to be not reliably distinguishable from veraepacis and synonymized with it by most authors; in addition, that broader taxon thought by some to be possibly indistinguishable from nominate. Supposed characters of proposed race moderatus, described from single specimen from N Peru, evidently represent individual variation within highly variable watkinsi. Proposed species A. xanthippe (W Panama) considered a synonym of fumosus. Racial identity of birds in SW Venezuela (Apure) uncertain; tentatively assigned to cinnamomeigula. Recent specimens from Amazonian NE Peru (away from Andes) are small, and dark below, much like geographically distant obscurus; believed possibly to represent an undescribed taxon. Fourteen subspecies currently recognized.