| MONOTOMIDAE | ||||||
| Rhizophaginae | ||||||
| Rhizophagus sayi Schaeffer (3) | ||||||
| Monotominae | ||||||
| Monotomini | ||||||
| Monotoma americana Aube (2,5) | ||||||
| M. parallela LeConte (4) | ||||||
| Europini | ||||||
| Hesperobaenus rufipes LeConte (1) | ||||||
| 1. In OSU Collection - Det. C. A. Frost | ||||||
| 2. In OSU Collection - Determiner unknown | ||||||
| 3. Reported by Bousquet, 1990 | ||||||
| 4. Reported by Shepard, 1978 | ||||||
| 5. Reported by Stoner et al., 1962 | ||||||
| 3 genera - 4 species | ||||||