| Speyeria idalia (Drury, 1773) |
| Status: Uncommon to abundant local resident |
| Flight Period(s): There is a single flight, with peak numbers from mid June to early July. In Nebraska it has been found from 3 June – 27 September. |
| Range: This species has been recorded from North Dakota and Kansas east to the New England states. |
| Larval Hostplant(s): Various violets are fed upon including Prairie and Yellow Prairie Violets (Viola pedatifida and V. nuttallii) |
| Overwinter: As unfed caterpillars |
| Commentary/Habitat: While the Regal Fritillary is absent or declining in much of the eastern reaches of it range it can still found in abundance in some of the prairie states including Nebraska where it is most often found in wet meadows. It can also be found in some higher quality upland prairies although these are becoming fewer in number. Adults have been observed at various nectar sources including milkweeds, thistles, ironweed, and liatris. Males can be differentiated from females in that in the female both rows of spots on the dorsal hindwing are cream colored while in the male the outer row is orange. |
| Similar Species: None |
