- Acrydium ornatum Say, 1824: 10.
Syntype; dafd1130-3a6e-4086-b33f-686808b789b0; United States: New Jersey: Kaighn's Point
- Tetrix bilineata Harris, 1841: 151.
Syntype; 68cd6a2c-da6d-4b84-b517-bfab5ae6906b; United States: Massachusetts
- ... Show all ... (52)
- Tetrix dorsalis Harris, 1841: 151.
Syntype; 1a1cc88a-d1f8-4003-928e-924bf8a823fe; United States: Massachusetts
- Tetrix quadrimaculata Harris, 1841: 151.
Syntype; 51bfca63-047d-42d2-b4ab-49796204776c; United States: Massachusetts
- Tettix triangularis Scudder, 1862: 475.
Syntype; female; 13b8dac1-64d3-428e-ae13-f748216d2246; deposited at: Academy of Natural Sciences of Philadelphia (ANSP); United States: Maine
- Tettix ornata (Say, 1824) in Scudder, 1862: 474.
- Tettigidea acadica Scudder, 1875: 345.
Syntype; female; 76102dc2-ab2f-40a6-b5b7-a9a7190a3134; United States: Minnesota: Lake of the Woods: near Lake of the Woods
- Tetix [sic] ornata (Say, 1824) in Caulfield, 1887: 401.
- Tetigidea [sic] acadica Scudder, 1875 in Caulfield, 1887: 402.
- Tetix [sic] triangularis (Scudder, 1862) in Caulfield, 1887: 402.
- Tettix triangularis Scudder, 1862 in Fernald, 1888: 47.
- Tettix ornatus (Say, 1824) in Fernald, 1888: 46.
- Tettix triangularis Scudder, 1862 in Beutenmüller, 1894: 310.
- Tettix triangularis Scudder, 1862 in Morse, 1894: 54.
- Tettix ornatus (Say, 1824) in Beutenmüller, 1894: 310.
- Tettix ornatus (Say, 1824) in Morse, 1894: 54.
- Tettix acadica (Scudder, 1875) in Scudder, 1897: 209.
- Acridium ornatum (Say, 1824) in Scudder, 1901: 9.
- Tettix triangularis Scudder, 1862 in Hancock, 1902: 80.
- Tettix acadicus (Scudder, 1875) in Scudder & Cockerell, 1902: 22.
- Tettix ornatus (Say, 1824) in Scudder & Cockerell, 1902: 22.
- Tettix acadicus (Scudder, 1875) in Hancock, 1902: 76.
- Tettix ornatus (Say, 1824) in Hancock, 1902: 78.
- Tettix ornatus (Say, 1824) in Morse, 1904: 26.
- Tetrix ornata (Say, 1824) in Hancock, 1907: 59.
- Acrydium acadicum (Scudder, 1875) in Kirby, 1910: 47.
- Acrydium ornatum Say, 1824 in Morse, 1920
- Acrydium ornatum Say, 1824 in Blatchley, 1920: 165.
- Acrydium ornatum Say, 1824 in Hebard, 1928: 222.
- Acrydium acadicum acadicum (Scudder, 1875) in Hebard, 1928: 222.
- Acrydium ornatum Say, 1824 in Hebard, 1929: 320.
- Acrydium acadicum (Scudder, 1875) in Olsen, 1929: 182.
- Acrydium acadicum acadicum (Scudder, 1875) in Hebard, 1929: 320.
- Acrydium acadicum acadicum (Scudder, 1875) in Hebard, 1932: 222.
- Acridium acadicum acadicum (Scudder, 1875) in Hebard, 1934: 169.
- Acridium ornatum (Say, 1824) in Hebard, 1934: 169.
- Acrydium acadicum acadicum (Scudder, 1875) in Hebard, 1935: 234.
- Acrydium ornatum Say, 1824 in Cantrall, 1943: 79.
- Acrydium acadicum acadicum (Scudder, 1875) in Cantrall, 1943: 78.
- Tettigidea acadica Scudder, 1875 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1956: 123.
- Tetrix ornata (Say, 1824) in Rehn & Grant, 1956: 117.
- Tetrix ornata (Say, 1824) in Brooks, 1958: 62.
- Tetrix bilineata Harris, 1841 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1961: 55.
- Tetrix dorsalis Harris, 1841 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1961: 55.
- Tetrix quadrimaculata Harris, 1841 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1961: 55.
- Tettigidea acadica Scudder, 1875 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1961: 56.
- Tettix triangularis Scudder, 1862 (subjective synonym of Acrydium ornatum Say, 1824) in Rehn & Grant, 1961: 55.
- Tetrix ornata ornata (Say, 1824) in Rehn & Grant, 1961: 56.
- Tetrix ornata (Say, 1824) in Vickery & Kevan, 1967: 42.
- Tetrix dorsalis Harris, 1841 (subjective synonym of Acrydium ornatum Say, 1824) in Vickery & Kevan, 1986: 315.
- Tetrix quadrimaculata Harris, 1841 (subjective synonym of Acrydium ornatum Say, 1824) in Vickery & Kevan, 1986: 315.
- Tettigidea acadica Scudder, 1875 (subjective synonym of Acrydium ornatum Say, 1824) in Vickery & Kevan, 1986: 315.
- Tetrix ornata ornata (Say, 1824) in Vickery & Kevan, 1986: 314.
- Tetrix ornata ornata (Say, 1824) in Vickery, 1997: 233.