- BND: Poweshiek Skipperling; Oarisma poweshiek (Parker, 1870)
- BNA: Poweshiek Skipperling; Oarisma poweshiek
- NDC: OAPO
- Habitat: Virgin fresh tallgrass meadows
- Larval food: Unknown sedge or grass, possibly Eleocharis
- Adult flight: One brood, Late June to early July
- References: Royer 28, Opler & Krizek 223, Scott 431
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