Sympistis adults. 25 S. ferrirena, holotype male, USA, Arizona, Cochise County, 31°55.07'N, -109°16.54'W26 S. ferrirena, female, USA, New Mexico, High Rolls, Karr Canyon 27 S. dunbari, female, USA, Washington, Whatcom County, W slope Chuckanut Mountain above Chuckanut Bay 28 S. definita, female, USA, Oregon, Harney County, Catlow Rim.

 
 
  Part of: Crabo L, Hammond P, Mustelin T, Wikle D (2018) Six new species and one new subspecies of noctuid moths from western United States of America and Mexico (Lepidoptera, Noctuidae). In: Schmidt BC, Lafontaine JD (Eds) Contributions to the systematics of New World macro-moths VII. ZooKeys 788: 201-239. https://doi.org/10.3897/zookeys.788.26282