| | | Kind of type | Full locality |
| | | unspecified primary type of species Oecanthus varicornis Walker, 1869 | Mexico |
| | | [not recorded as a type] | South-Central U.S.A., Texas: San Diego |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Grimes County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Hidalgo County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Limestone County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Cameron County: Brownsville |
| | | [not recorded as a type] | South-Central U.S.A., Texas: Ganado |
| | | [not recorded as a type] | South-Central U.S.A., Texas: Lake Corpus Cristi |
| | | [not recorded as a type] | South-Central U.S.A., Texas: Lockhart St Pk |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Grimes County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Hidalgo County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Limestone County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Grimes County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Hidalgo County |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Limestone County |
| | | [not recorded as a type] | South-Central U.S.A., Texas: Alamo |
| | | [not recorded as a type] | South-Central U.S.A., Texas, Grimes County |
| | | holotype of synonym Oecanthus marcosensis Baker, 1905 | Central America, Nicaragua: San Marcos |
| | | [not recorded as a type] | Mexico Northeast, Tamaulipas |
| | | [not recorded as a type] | Mexico Southwest, Oaxaca |