Trapezonotus dispar Stål, 1872c: 56. LT (Scudder, 1976b: 31): male, France (south); NHRS.
Trapezonotus agrestis var. seductor Horváth, 1883a: 27 (transferred to var. of dispar by Puton, 1886a: 28; upgraded to specific status by Seidenstücker, 1980: 105; syn. Vinokurov, 1990: 84). LT (Scudder, 1970a: 198): female, Turkey, Brussa [= Bursa]; HNHM.
Trapezonotus arenarius f. alpina Gulde, 1937: 168. Unavailable name (see Seidenstücker, 1980b: 105).
Trapezonotus dispar f. pseudomacroptera Gulde, 1937: 168. Unavailable name (see Seidenstücker, 1980b: 105).
Trapezonotus quadratus (non Fabricius, 1798): Stichel, 1959b: 240. Misidentification (see Stichel, 1959: 341b). See note.