| Geron Meigen, 1820 |
| Geron (Geron) Meigen, 1820 |
| Geron (Geron) alba Cole, 1923 |
| Geron (Geron) albaria Painter, R. H., 1932 |
| Geron (Geron) albidipennis Loew, 1870 |
| Geron (Geron) antologos Tabet, 1979 |
| Geron (Geron) argutus Painter, R. H., 1932 |
| Geron (Geron) colei Painter, R. H., Painter, E. M. & Hall, 1978 |
| Geron (Geron) digitarius Cresson, 1919 |
| Geron (Geron) digitarius var. robustus Cresson, 1919 |
| Geron (Geron) eriogonae Hall & Evenhuis, 2003 |
| Geron (Geron) grandis Painter, R. H., 1932 |
| Geron (Geron) holosericeus Walker, 1849 |
| Geron (Geron) insularis Cole, 1923 |
| Geron (Geron) litoralis Painter, R. H., 1932 |
| Geron (Geron) nevadensis Hall & Evenhuis, 2003 |
| Geron (Geron) niveoides Cole, 1923 |
| Geron (Geron) notios Hall & Evenhuis, 2003 |
| Geron (Geron) perplexus Tabet, 1979 |
| Geron (Geron) prosopidis Hall & Evenhuis, 2003 |