Status as species: Wheeler, 1910a: 570; Wheeler, 1913i: 485 (redescription); Wheeler, 1917a: 545; Wheeler, 1917k: 464; Emery, 1925d: 258; Wheeler & Wheeler, 1944: 267; Buren, 1944a: 307; Creighton, 1950a: 515; Smith, 1951c: 873; Gregg, 1952b: 18 (in text); Smith, 1958c: 160; Smith, 1967a: 373; Kutter, 1968c: 207; Francoeur, 1977b: 208; Yensen et al., 1977: 185; Smith, 1979: 1456; DuBois & LaBerge, 1988: 149; Wheeler et al., 1994: 307; Bolton, 1995b: 205; Coovert, 2005: 146; Ellison et al., 2012: 176.

Status as species: {ref 130044}: 570; {ref 130081}: 485 (redescription); {ref 130116}: 545; {ref 130126}: 464; {ref 124775}: 258; {ref 129845}: 267; {ref 123329}: 307; {ref 123910}: 515; {ref 128824}: 873; {ref 125677}: 18 (in text); {ref 128854}: 160; {ref 128863}: 373; {ref 126727}: 207; {ref 125337}: 208; {ref 130568}: 185; {ref 128659}: 1456; {ref 124419}: 149; {ref 129947}: 307; {ref 122860}: 205; {ref 143326}: 146; {ref 142320}: 176.