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Host-plant associations: Host is Muhlenbergia pungens (Lowry & Blocker 1987). See BONAP's North American Plant Atlas for its distribution north of Mexico.

Range of collection dates: 27 June–26 August.

Elevation range (approximate): ‍2860–7750 ft.

Sources of Distribution Data: Redrawn almost entirely from Whitcomb & Hicks 1988. Additional records from the collection of the University of Colorado Natural History Museum.