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 subfuscula sub-group This sub-group includes only L . subfuscula , a moderately large gray species with distinct dark lines and spots, including the claviform spot. It resembles members of the L . perplexa sub-group. Males have the widest antenna of any Lasionycta , over 4× as wide as the central shaft, and are easily identified without magnification. Females are the only species in the species-group in which the corpus bursae is angled 30° leftward at its junction with the ductus bursae. The valve is elongate with a moderate constriction at the base of the cucullus. The costa is angled slightly ventrad beyond the digitus. Th e costal lobe is prominent, extending above the valve margin. Th e cucullus is smaller relative to the valve than in the L . perplexa sub-group, and bears a corona of a singe row of setae. The digitus is angled 30° to the valve axis and is relatively long and slender. Th e female appendix bursae is slightly more slender than those of the L . perplexa sub-group. CO1 distance analysis suggests that L . subfuscula is a sister group to a large assemblage containing the species of the L . leucocycla and L . perplexa sub-groups, L . staudingeri , and L . subfumosa .