| Omicron reguloide Giordani-Soika, 1978 |
| Omicron regulum (de Saussure, 1857) |
| Omicron regulum subsp. cuernavacense Giordani-Soika, 1978 |
| Omicron regulum subsp. regulum (de Saussure, 1857) |
| Omicron regulus Giordani-Soika, 1978 |
| Omicron regulus subsp. cuernavacensis Giordani-Soika, 1978 |
| Omicron rufiscutum Giordani-Soika, 1978 |
| Omicron rusticum Giordani-Soika, 1978 |
| Omicron thoracicum (de Saussure, 1875) |
| Omicron totonacum (de Saussure, 1875) |
| Pachodynerus de Saussure, 1870 |
| Pachodynerus acuticarinatus (Cameron, 1909) |
| Pachodynerus californicus (de Saussure, 1870) |
| Pachodynerus nasidens (Latreille, 1817) |
| Pachodynerus praecox (de Saussure, 1855) |
| Pachymenes de Saussure, 1852 |
| Pachymenes (Symmorphus) Wesmael, 1836 |
| Pachymenes (Symmorphus) sonorensis Bequaert, 1940 |
| Pachymenes aztecus (de Saussure, 1857) |
| Pachymenes impunctatus Bohart, 1948 |