| Erynnis persius (Scudder, 1873) |
| Status: Rare to uncommon local resident |
| Flight Period(s): The Persius Duskywing flies in a single extended flight in June and July. |
| Range: Found from Alaska east to Manitoba and south to New Mexico and Arizona and also in the Great Lakes and Appalachian regions. In Nebraska it is restricted to pine ridge habitats in the panhandle. |
| Larval Hostplant(s): Western populations feed on legumes including Slender and Two-grooved Milkvetches (Astragalus flexuosus and A. bisulcatus), Golden Pea (Thermopsis rhombifolia), Silvery Lupine (Lupinus argenteus) and Lotus purshianus |
| Overwinter: As a full-grown caterpillar |
| Commentary/Habitat: Although Marone (2002) considers the Persius Duskywing to be the most common Duskywing in the Black Hills (where it prefers pine woodlands, meadows, roadsides, and streamsides) it is rarely reported from Nebraska’s Pine Ridge. It is reported to fly between or slightly overlap the first and second flights of the Afranius Duskywing, which is commonly encountered in the Nebraska panhandle. |
| Similar Species: N/A |
