- Gomphocerus simplex Scudder, 1869: 305.
Holotype; male; a730982b-91eb-4536-99c8-5c068f8cea9f; deposited at: Academy of Natural Sciences of Philadelphia (ANSP); United States: Delaware
- Stenobothrus tricarinatus Thomas, 1873: 84.
Syntype; 30c7dad3-e068-4dee-98d0-63737482aa55; United States: Wyoming
- ... Show all ... (49)
- Gomphocerus carinatus Scudder, 1875: 511.
- Gomphocerus virgatus Scudder, 1875: 511.
Syntypes (n= 2); female; 839f7990-9817-424d-8a22-40833d798b2e; deposited at: Academy of Natural Sciences of Philadelphia (ANSP); United States: Texas
- Gomphocerus navicula Scudder, 1876: 286.
Holotype; male; 07ace1a0-0d2e-4b7b-9c92-389b476540df; deposited at: Academy of Natural Sciences of Philadelphia (ANSP); United States: Colorado
- Eritettix variabilis Bruner, 1889: 56.
Lectotype; male; bfe314e6-3d2d-496f-aad3-1fbb6a14fbe5; deposited at: National Museum of Natural History, Smithsonian Institution (USNM); United States: New Mexico: Grant: Silver City
- Gomphocerus virgatus Scudder, 1875 in Bruner, 1889: 57.
- Eritettix vernalis Bruner, 1893: 22. (nomen nudum in Otte, 1981: 238)
- Eritettix simplex (Scudder, 1869) in McNeill, 1897: 218, 219.
- Eritettix naviculus (Scudder, 1876) in McNeill, 1897: 218, 220.
- Eritettix variabilis Bruner, 1889 in McNeill, 1897: 218, 219.
- Gomphocerus virgatus Scudder, 1875 in McNeill, 1897: 218.
- Stenobothrus tricarinatus Thomas, 1873 in McNeill, 1897: 218, 219.
- Gomphocerus carinatus Scudder, 1875 (synonym of Eupedetes carinatus Scudder, 1902) in McNeill, 1897: 218, 219.
- Eritettix simplex (Scudder, 1869) in Rehn, 1901: 332.
- Gomphocerus carinatus Scudder, 1875 (synonym of Eupedetes carinatus Scudder, 1902) in Rehn, 1901: 332.
- Gomphocerus navicula Scudder, 1876 in Scudder & Cockerell, 1902: 24.
- Eritettix brachypterus Bruner, 1904: 53.
Syntype; a167dd80-b4d6-4541-a8da-3f21743bcd9e; Mexico: Durango
- Gomphocerus carinatus Scudder, 1875 (synonym of Gomphocerus simplex Scudder, 1869) in Rehn, 1907: 33.
- Eritettix variabilis Bruner, 1889 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Rehn, 1907: 33.
- Eritettix variabilis Bruner, 1889 in Rehn & Hebard, 1909: 137.
- Eritettix vernalis Bruner, 1893 (unavailable or invalid, linked to Gomphocerus virgatus Scudder, 1875) in Kirby, 1910: 111.
- Gomphocerus carinatus Scudder, 1875 (synonym of Gomphocerus simplex Scudder, 1869) in Rehn & Hebard, 1911: 626.
- Eritettix variabilis Bruner, 1889 in Rehn & Hebard, 1912: 63.
- Eritettix simplex (Scudder, 1869) in Morse, 1920: 430.
- Eritettix simplex dorsalis Blatchley, 1920: 212. (nomen nudum)
- Stenobothrus tricarinatus Thomas, 1873 in Hebard, 1927: 2.
- Stenobothrus tricarinatus Thomas, 1873 in Hebard, 1928: 225, 226.
- Eritettix variabilis Bruner, 1889 in Hebard, 1929: 325.
- Stenobothrus tricarinatus Thomas, 1873 in Hebard, 1929: 326.
- Gomphocerus navicula Scudder, 1876 (subjective synonym of Stenobothrus tricarinatus Thomas, 1873) in Hebard, 1929: 326.
- Gomphocerus virgatus Scudder, 1875 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Hebard, 1931: 140.
- Eritettix simplex (Scudder, 1869) in Hebard, 1934: 175.
- Eritettix variabilis Bruner, 1889 in Tinkham, 1948: 570.
- Eritettix simplex (Scudder, 1869) in Brooks, 1958: 57.
- Eritettix simplex (Scudder, 1869) in Otte, 1970: 90.
- Eritettix simplex (Scudder, 1869) in Otte, 1981: 108, 238.
- Eritettix simplex dorsalis Blatchley, 1920 (unavailable or invalid, linked to Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Eritettix vernalis Bruner, 1893 (unavailable or invalid, linked to Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Gomphocerus carinatus Scudder, 1875 (synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Eritettix brachypterus Bruner, 1904 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Eritettix variabilis Bruner, 1889 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Gomphocerus virgatus Scudder, 1875 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Stenobothrus tricarinatus Thomas, 1873 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1981: 238.
- Eritettix simplex (Scudder, 1869) in Pfadt, 1988
- Eritettix simplex (Scudder, 1869) in Richman, Lightfoot, Sutherland & Ferguson, 1993: 68.
- Gomphocerus navicula Scudder, 1876 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1995: 160.
- Stenobothrus tricarinatus Thomas, 1873 (subjective synonym of Gomphocerus simplex Scudder, 1869) in Otte, 1995: 160.
- Eritettix simplex (Scudder, 1869) in Capinera, Scott & Walker, 2004: 66, Plate 3.
- Eritettix simplex (Scudder, 1869) in Rivera García, 2006: 138.
- Eritettix simplex (Scudder, 1869) in García García & Fontana, 2006: 251.