Costa Rica south through tropical South America to Argentina (Kugler and Brown 1982). Costa Rica: southwestern lowlands and Osa Peninsula.
Taxonomic history
Emery, 1901l PDF: 199 (l.); Almeida Filho, 1987a PDF: 175 (q.).Combination in Ectatomma (Ectatomma): Mayr, 1887 PDF: 539.Status as species: Roger, 1863b PDF: 17; Mayr, 1863a PDF: 459; Emery, 1888c PDF: 353; Dalla Torre, 1893 PDF: 24; von Jhering, 1894 PDF: 380; Emery, 1896h PDF: 625; Emery, 1906c PDF: 113; Emery, 1911e PDF: 43; Forel, 1912d PDF: 31; Santschi, 1912e PDF: 521; Bruch, 1914 PDF: 213; Bruch, 1915 PDF: 528; Santschi, 1916e PDF: 366; Gallardo, 1918c PDF: 35 (redescription); Luederwaldt, 1918 PDF: 34; Borgmeier, 1923: 56; Eidmann, 1936a PDF: 33; Kusnezov, 1953c PDF: 336; Kusnezov, 1957e PDF: 14 (in key); Brown, 1958g PDF: 208, 296; Kempf, 1972b PDF: 104; Kempf & Lenko, 1976 PDF: 50; Kugler & Brown, 1982: 4; Almeida Filho, 1987a PDF: 175; Zolessi et al., 1988: 2; Brandão, 1991 PDF: 341; Fernández, 1992: 554 (in key); Bolton, 1995b: 186; Wild, 2007b PDF: 26; Arias-Penna, 2008b PDF: 61; Bezděčková et al., 2015 PDF: 110; Feitosa, 2015c: 97; Feitosa & Prada-Achiardi, 2019 PDF: 665.Senior synonym of Ectatomma edentatum inversa: Brown, 1958g PDF: 208; Kempf, 1972b PDF: 104; Bolton, 1995b: 186.Senior synonym of Ectatomma edentatum iris: Brown, 1958g PDF: 208; Kempf, 1972b PDF: 104; Bolton, 1995b: 186.Senior synonym of Ectatomma macdonaghi: Kugler & Brown, 1982: 4; Brandão, 1991 PDF: 342; Bolton, 1995b: 186.Senior synonym of Ectatomma morgani: Kugler & Brown, 1982: 4; Brandão, 1991 PDF: 342; Bolton, 1995b: 186.Material of the unavailable name Ectatomma edentatum muticum densestriata referred here by Brown, 1958g PDF: 208; Kempf, 1972b PDF: 104; Bolton, 1995b: 186.
