Distribution of the species of Ctenidiosomus. Ctenidiosomus austrinus: 1 Type locality: Argentina, Salta Province, Dept. Chicoana, app. 15 km W Escoipe, on Provincial road N°33 (25°10'25.2"S; 65°49'31.6"W), 2680 m. Ctenidiosomus spillmanni: 2 Peru, Dept. Junín, Huancayo Province, El Tambo (12°01'37.88"S; 75°12'46.46"W), 3327 m; 3 Peru, Depto. Ancasch, Huaylas Province, Huaylas (8°54'7"S; 77°50'21"W), 2067 m; 4 Peru, Dept. Piura, Huancabamba Province, Huancabamba (5°14'22"S; 79°26'59"W), 1930 m; 5 Ecuador, Loja Province (no specific locality) I; 6 Ecuador, Loja Province, Alamor (4°01'14.29"S; 80°01'21.97"W), 1279 m. 7 Type locality: Ecuador, Pichincha Province (no specific locality). Ctenidiosomus rex: 8 Type locality: Colombia, Dept. Huila, San Agustin (1°52'39.20"N; 76°15'11.08"W), 1625 m; 9 Colombia, Dept. Huila, San Agustin, left bank of Rio Magdalena (1°55'01.10"N; 76°20'59.06"W), 1748 m†. Ctenidiosomus traubi: 10 Type locality: Colombia, Dept. Antioquia, Sonson‡, 7 km E of Paramo (5°43'23.23"N; 75°11'11.36"W), 2049 m. Ctenidiosomus perplexus: 11 Type locality: Venezuela, Trujillo State, Trujillo Township, Trujillo, 14 km. E, near Misisi. (9°21'51.23"N; 70°18'30.89"W), 2210 m. Other distribution records: 12 Venezuela, Merida State, near Santa Rosa (8°53'52.11"N; 70°36'55.77"W), 2040 m; 13 Venezuela, Merida State, near Middle Refugio (8°36'07.36"N; 71°04'17.00"W), 2550 m; 14 Venezuela, Merida State, La Coromoto (8°6'48.31"N; 71°29'54.1"W), 2500 m§. 15 Venezuela, Tachira State, San Cristobal Township, 35 km S and 22 km W of San Cristobal, Buena Vista (7°29'43.29"N; 72°26'52.45"W), 2386 m; 16 Venezuela, Tachira State, Buena Vista (7°29'43.29"N; 72°26'52.45"W), 2386 m; †The elevation was incorrectly cited as “2300m” in Johnson 1957; ‡The city was incorrectly cited as “Sanson” in Mardon 1981; § The elevation was incorrectly cited as “3170” in Tipton and Machado Allison 1972; I Both, the specific and unspecified localities are indicated by a point, the unspecified locality is placed in an approximate point.