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 phaea (Hampson) Figs 6, 139, 197. Map 2 Anarta phaea Hampson, 1905: 45 . Lasiestra impingens phaea ; McDunnough 1938: 72 . Lasionycta phaea ; Lafontaine and Kononenko 1988: 909 . Type material. Lectotype ♀ [ BMNH , examined]. Type locality: Cambridge Bay , Victoria Land [Victoria Island, Nunavut , Canada ]. Th e lectotype female was designated by Lafontaine and Kononenko (1988: 909) . Diagnosis . Lasionycta phaea is the only North American Lasionycta in which the male has a broadly spatulate uncus and the female a spiraled indentation on the appendix bursae. Th e moth resembles a small L . taigata or L . skraelingia . The reniform spot is smaller then in either of these species. Th e adult is diurnal, with reduced eyes, whereas the other species are nocturnal and have normal-sized or only slightly reduced eyes. Th e male antenna of L . phaea is nearly filiform whereas those of L . taigata and L . skraelingia are biserrate. Distribution and biology. Lasionycta phaea is an arctic species. It has been collect- ed from Baffin Island in northeastern Canada to the central Brooks Range in northern Alaska and southward along the west coast of Hudson Bay to Arviat, Nunavut . It is rare in collections. Adults are diurnal and occur on wet tundra. Collection dates range from late June to mid-July.