The Aventiinae, Boletobiinae, Eublemminae, Pangraptinae, Phytometrinae, and Scolecocampinae (Lepidoptera: Noctuoidea: Erebidae) of Great Smoky Mountains National Park, U. S. A. Author Pogue, Michael G. text Zootaxa 2012 3153 1 31 journal article 45706 10.5281/zenodo.279582 155cefd2-7fbd-4482-9f7d-bcc96d645bb7 1175-5326 279582 4. Isogona tenuis (Grote, 1872) Thin-lined Owlet ( Figs. 46–48 , Map 22) Identification. Forewing length 10.8–15.5 mm . Isogona tenuis has a brown forewing ground color that is darker along the costa. Forewing is well marked with all pattern elements cream colored. All forewing veins are highlighted with cream-colored scales; antemedial line is sharply curved between costa and R vein then straight to posterior margin; reniform spot large, at end of discal cell; postmedial line is Y-shaped at M1 vein, with proximal branch from costa and distal branch from apex that forms a straight angled line to posterior margin; subterminal line faint and crenulate; terminal line cream colored; outer margin abruptly angle at M3 vein. Hind wing concolorous to somewhat lighter than forewing with continuation of postmedial line across middle of hind wing. Labial palpus is porrect and elongate, approximately 3 X eye width; frons is bare. Thorax has a dark brown prothoracic collar. Flight period. June to August, probably more than one brood. Collected localities. Tennessee: Blount Co.: Campsite 6 along Scott Mountain Trail; Cocke Co.: Foothills Parkway. ( 2 specimens ) Elevation range. 2020–3324 ft . ( 616–1013 m ) General distribution. Distributed from Pennsylvania south to Florida and west to Ohio, Illinois, Missouri, Oklahoma, Louisiana, east Texas, and Kansas. Larval hosts. Hackberry ( Celtis sp., Ulmaceae ) ( Covell 1984 ). MAP 22. Collecting localities of Isogona tenuis .