- BND: Mohave Sooty Wing; Hesperopsis libya (Scudder, 1878)
- BNA: Mohave Sootywing; Hesperopsis libya
- NDC: HELI
- Habitat: Far western badlands in Atriplex flats; rare in ND
- Larval food: Reported as Atriplex spp.
- Adult flight: May-June and July-August
- References: Royer 24, Ferris & Brown 87, Scott 499
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