| Isotomina Börner, 1903 |
| Isotomina constricta Folsom, 1937 |
| Isotominae Schäffer, 1896 |
| Isotomodes Axelson, 1907 |
| Isotomodes alexius Palacios-Vargas & Kovác, 1995 |
| Isotomodes falsus Christiansen & Bellinger, 1980 |
| Isotomodes klostermani Bernard, 1971 |
| Isotomodes subarmatus Jordana & Arbea, 1990 |
| Isotomurus Börner, 1903 |
| Isotomurus atreus Christiansen & Bellinger, 1980 |
| Isotomurus bimus Christiansen & Bellinger, 1980 |
| Isotomurus cibus Christiansen & Bellinger, 1980 |
| Isotomurus palustris (Müller, 1776) |
| Isotomurus retardatus Folsom, 1937 |
| Isotomurus tricolor (Packard, 1873) |
| Pachyotoma Bagnall, 1949 |
| Pachyotoma crassicauda (Tullberg, 1871) |
| Pachyotominae Potapov, 2001 |
| Panchaetoma Bagnall, 1949 |
| Panchaetoma communa Cutz-Pool, Palacios-Vargas & Vázquez, 2003 |