Chlorospingus semifuscus livingstoni Bond & Meyer de Schauensee, 1940

Sánchez-Nivicela, Manuel, Avendaño, Jorge Enrique, Sánchez-Nivicela, Juan C., Torres, Ana, Fuchs, Jérôme, Bird, Bentley & Bonaccorso, Elisa, 2021, A taxonomic assessment of Chlorospingus flavopectus phaeocephalus and Chlorospingus semifuscus (Passeriformes: Passerellidae), including the description of a new subspecies, Zootaxa 5057 (2), pp. 151-180 : 164

Chlorospingus semifuscus livingstoni Bond & Meyer de Schauensee, 1940

Plumage and iris coloration (n = 31; 20 males, 8 females, and 5 unsexed).—Some variations in adult individuals may be related to sex and age. Throat in adult males (holotype ANSP 141967 , and specimens ICN 37437, ICN 37438, and IAvH A12532): dark neutral gray (C.83) with scarce dark quaker drab (k. 1) or dark mouse gray (k. 15) speckles. Malar region : a combination of light neutral gray (C.85) and glaucous (C.79, C.80); a weak dark neutral gray (C.83) moustachial stripe can be perceived depending on view angle. Throat region in females and subadults: lighter or pale neutral gray (C.86), some barbules with olive-yellow (C.52). Pectoral band: absent in adults, but a hint of olive-yellow (C.52) or citrine (C.51) feathers on some chest barbules, and on both flanks on shoulders, can be seen; subadults have a major presence of olive-yellow (C.52) barbules/feathers over this body part giving the impression of an inconspicuous band (e.g., IAvH A12508). Belly: in adult males has a combination of olive-gray (C.42), medium neutral gray (C.84), and dark olive-gray (i.23); in juveniles or subadults, all these colors are present with white, some pearl gray (C.81), pale neutral gray (C.86), and olive-yellow (C.52) or citrine (c.51) scattered on belly and flanks. Iris coloration: usually silvery-yellow; certain individuals can present reddish coloration in and near the outer rim of the iris .

Breeding.—A juvenile was observed and photographed giving begging calls and following its parents in the Montezuma region (Tatamá National Park), Risaralda Department, Colombia, on 26 June 2019. Begging calls were recorded by MSN ( XC 607806) .

Distribution.—West slope of Western Cordillera of Colombia, from the headwaters of San Juan River on Cerro Tatamá, Risaralda Department south to Cerro Munchique, Cauca Department at 900‒2400 m ( Hilty & Brown 1986; Hilty 2020b). The southern limit of this Colombian endemic may be in the Patía River drainage at a place named “Hoz del Minamá” (F. Ayerbe-Quiñones pers. comm.). This Colombian endemic subspecies does not overlap geographically with C. s. semifuscus .