| Genus | Species | Subspecies | Author | Common Name | Last Sampled | Last Collectors | Where for All Dates? |
|---|---|---|---|---|---|---|---|
| Isonychia | arida | - | (Say 1839) | Brushy-legged mayfly | 2009-06-30 | BNichols, CKozmik & CBerg | Here |
| Isonychia | bicolor | - | (Walker 1853) | Brushy-legged mayfly | 2002-06-05 | REDeWalt | Here |
| Isonychia | georgiae | - | McDunnough 1931 | Brushy-legged mayfly | 2001-05-18 | CD & RPRandolph & LMJacobus | Here |
| Isonychia | hoffmani | - | Kondratieff & Voshell 1984 | Brushy-legged mayfly | 2001-07-18 | BDHeinold & SLJohnson | Here |
| Isonychia | rufa | - | McDunnough 1931 | Brushy-legged mayfly | 2001-07-18 | BDHeinold & SLJohnson | Here |
| Isonychia | sayi | - | Burks 1953 | Brushy-legged mayfly | 2001-05-18 | CD & RPRandolph & LMJacobus | Here |
| Isonychia | similis | - | Traver 1932 | Brushy-legged mayfly | 1995-08-24 | CRParker, GSalansky & HSoehn | Here |
| Isonychia | species ** | - | (NA) | 2011-07-01 | BNichols & LKobelt | Here | |
| Isonychia | tusculanensis | - | Berner 1948 | Brushy-legged mayfly | 2007-05-18 | REDeWalt & LMJacobus | Here |
| Total Number of Species = 8 | |||||||