Dasybasis trita (Walker, 1837)

Tabanus tritus Walker, 1837: 338 .

Tabanus magellanicus Philippi, 1862b: 413 . Holotype. Female (MNNC), Chile, Estrecho de Magallanes (without precise locality). Philippi, 1865: 717 (redes.); Lynch Arribálzaga, 1882: 135 (cat.); Bigot, 1888: 18 (dist.); Reed, 1888: 287 (cat.); Hunter, 1901: 142 (cat.); Porter, 1902: 248 (Chile spp., Tabanus); Brèthes, 1907: 285 (cat.); Kertész, 1908: 259 (cat.); Brèthes, 1921: 72 (com.); Kröber, 1934: 275 (cat., Stypommia, syn.); Philip, 1968a: 13 (tax., Philippi’s types).

Stypommia patagonica Enderlein, 1922: 346, nomen nudum.

Stypommia patagonica Enderlein, 1925: 348 . Holotype. Female (ZMHB), Chile, Magallanes, Punta Arenas. Kröber, 1929a: 53–54 (tax., fig. 2); Kröber, 1934: 275 (cat., syn.); Coscarón, 1961: 45 (redes., des. male, figs. 1–23, Dasybasis); Fairchild, 1966: 16 (tax., Enderlein’s type).

Holotype. Female (NHMUK). Type-locality: Chile, Straits of Magellan, Cape Gregory.

Distribution. Argentina: Provincias de Santa Cruz, Tierra del Fuego. Chile: Región de Aysén (Capitan Prat, Coyhaique); Región de Magallanes (Magallanes, Última Esperanza).

References. Walker, 1848: 189 (list, Tabanus); Lynch Arribálzaga, 1882: 136 (cat., Tabanus); Hunter, 1901: 144 (cat., Tabanus); Brèthes, 1907: 285 (cat., Tabanus); Kertész, 1908: 288 (cat., Tabanus); Brèthes, 1921: 71 (com., Tabanus); Kröber, 1930e: 141–142 (redes., Tabanus (Stypommia) pl. 4, fig. 7), 150 (in key); Fraga, 1934: 184 (in key), 186–187 (redes., Tabanus ( Stypommia)); Kröber, 1934: 275 (cat., Stypommia); Stuardo, 1946: 73 (cat.); Fairchild, 1956: 30 (com.); Coscarón & Philip, 1967a: 101 (in key); Coscarón, 1967b: 123 (Argentina spp.); Coscarón & Philip, 1967b: 190–192 (rev.); Fairchild, 1971: 42 (cat., as tritus, error); Pino, 1975b: 192 (list); Moucha, 1976: 223 (cat., as tritus, error); Chainey, 1990: 315 (NHMUK types); Coscarón & González, 1991: 131 (Chile spp.); Fairchild & Burger, 1994: 70 (cat., as tritus, error); Coscarón, 1998: 350 (list, dist.); Coscarón & Papavero, 2009b: 76–77 (cat.).

Remarks. Northern localities cited by Fraga (1934: 187) from Huasco to Concepción possibly correspond to misidentifications. This species has a southern distribution (Aysén to Magallanes).