Hahncappsia coloradensis is a moth in the family Crambidae. It was described by Augustus Radcliffe Grote and Coleman Townsend Robinson in 1867. It is found in North America, where it has been recorded from Iowa to Utah, Colorado, Texas and Arizona."801447.00 – 4970 – Hahncappsia coloradensis – (Grote & Robinson, 1867)". North American Moth Photographers Group. Mississippi State University. Retrieved February 13, 2018.
The wingspan is 23–31 mm for males and 27–31 mm for females. The forewings are whitish with a slight ochreous tinge. The hindwings are whitish. Adults have been recorded on wing from April to September.Proceedings of the United States National Museum. 120 (3561)
The larvae feed on Helianthus species.
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