| Speyeria zerene sinope dos Passos & Grey, 1945 |
| Status: Uncommon to rare resident |
| Flight Period(s): There is one flight. The few Nebraska records are from 28 June – 30 July. |
| Range: The Zerene Fritillary occupies roughly the northwestern quarter of the United States. In Nebraska it is found in the northwestern corner of the state. |
| Larval Hostplant(s): Several violets are documented, of which Yellow Prairie Violet (Viola nuttallii) occurs in Nebraska where this fritillary has been found. Other violets are found in the same area but have not been verified as hostplants. |
| Overwinter: As unfed caterpillars |
| Commentary/Habitat: There are but a handful of records for this butterfly from the state, where it is found in Pine Ridge habitats. It was last reported in the 80's by Steve Spomer. All suspected records should be referred to specialists for verification. |
| Similar Species: Speyeria mormonia and S. coronis |
