Research Article

Paradoxes of Poweshiek Skipperling (Oarisma poweshiek) (Lepidoptera: Hesperiidae): Abundance Patterns and Management of a Highly Imperiled Prairie Species

Figure 5

O. poweshiek observation rates (individuals per hr except as noted) during 1988–1997, by site: (a) in northwestern Minnesota (Clay County) and adjacent southeastern North Dakota (Hartleben in Richland County), (b) west-central Minnesota (Chippewa, Douglas, Lyon, Pope, and Swift Counties), and (c) southwestern Minnesota (Lincoln and Pipestone Counties).
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(a) Northwestern Minnesota and southeastern North Dakota
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(b) West-central Minnesota
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(c) Southwestern Minnesota