Macrobiotus furcatus Murray (Richters 1908 a, Ramazzotti 1964 b)
M. furciger (andersoni ?) (Mihelčič 1972)
M. furciger Murray, 1907 (Claps & Rossi 1981)
Terra typica: South Orkney Islands (Southern Ocean)
Argentina:
• 41 ° 11 ′S, 71 ° 49 ′W; 1,800 m asl: Rio Negro Province, Nahuel Huapi National Park, Monte Tronador, semi-wet, lichens on rocks, semi-wet, mosses on tree and mosses on soil (3 samples). Claps & Rossi (1981)
• 42 ° 42 ′S, 70 ° 30 ′W; 500 m asl: Chubut Province, Gualjaina, semi-wet, mosses on rocks in the mountains. Claps & Rossi (1981)
• 54 ° 48 ′S, 68 ° 18 ′W; 50 m asl: Type Locality: Tierra del Fuego Province, Isla Grande de Tierra del Fuego, Ushuaia. Richters (1908 a)
• 54 ° 52 ′S, 67 ° 25 ′W: 0 m asl: Tierra del Fuego Province, Harberton Bay. Richters (1908 a)
• Undefined localities cited according Mihelčič (1967), shaded and wet lichens on tree and dry mosses and lichens on soil in full sun (2 samples). Mihelčič (1972)
Chile:
• 42 ° 37 ′S, 73 ° 49 ′W; 50–100 m asl: Region X Los Lagos (Región de Los Lagos), Chiloé Island, mosses (3 samples). Ramazzotti (1964 b)
• 55 °04′S, 67 ° 37 ′W: Undefined locality in Region XII Magallanes (Región de Magallanes y de la Antártica Chilena), Navarino Island. Richters (1908 a)
Record numbers: Argentina: 5, Chile: 2; total: 7.
Remarks: Species of the Macrobiotus furciger -group are reported from localities throughout the world but many require verification according to modern literature (for more details see Binda & Rebecchi 1992 and Binda et al. 2005). Binda et al. (2005), reduced the range of Macrobiotus furciger sensu stricto to the maritime Antarctic and sub-Antarctic South Georgia, suggesting the South American records require confirmation.