A Revision of Lasionycta Aurivillius (Lepidoptera: Noctuidae) for North America and notes on Eurasian species, with descriptions of 17 new species, 6 new subspecies, a new genus, and two new species of Tricholita Grote Author Crabo, Lars Washington State University, Bellingham, United States of America Author Lafontaine, Donald Agriculture and Agri-Food Canada, Ottawa, Canada text ZooKeys 2009 2009-12-18 30 30 1 156 journal article 10.3897/zookeys.30.308 ca35c50f-b0c5-4032-b06d-f71b00710c8d 1313–2970 576576 C26E1A82-0DD4-48EF-865C-9D8AA788B739 Lasionycta impingens curta (Morrison) Figs 104, 105, 184, 239. Map 21 Mamestra curta Morrison, 1875a: 96 . Orthosia perpura Morrison, 1875b: 66 . Anarta nivaria Grote, 1876: 107 . Subspecies curta is found in the Rocky Mountains from southern Montana to Colorado . It has a light gray forewing with prominent yellow or orange tinting, a dark postmedial line, and dark shading preceding the subterminal line. The dorsal hindwing marginal band contains lighter scales and appears patchy. This subspecies is larger than L . i . impingens (expanse 27–32 mm ).