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| No. | Valid Name | Author | English Name |
| 1. | Chasmistes brevirostris | Cope, 1879 | Shortnose sucker |
| 2. | Chasmistes cujus | Cope, 1883 | Cui-ui |
| 3. | Chasmistes fecundus | (Cope & Yarrow, 1875) | |
| 4. | Chasmistes liorus | Jordan, 1878 | June sucker |
| 5. | Chasmistes muriei | Miller & Smith, 1981 | Snake River sucker |