Isogona tenuis (Grote, 1872)

Pogue, Michael G., 2012, The Aventiinae, Boletobiinae, Eublemminae, Pangraptinae, Phytometrinae, and Scolecocampinae (Lepidoptera: Noctuoidea: Erebidae) of Great Smoky Mountains National Park, U. S. A., Zootaxa 3153, pp. 1-31 : 25

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 .

Figures

FIGURES 33 – 55. Adults. 33, Hyperstrotia secta, m, North Carolina, Jackson Co.: Balsam, 24 June 1974, D. C. Ferguson; 34, Hyperstrotia secta, f, Maryland, Prince Georges Co.: Beltsville, 26 May, 1986, D. C. Ferguson; 35, Hyperstrotia villificans, m, North Carolina, Swain Co.: Hazel Creek, Bradshaw Cemetery, GSMNP, 2040 ft., 23 July 2007, M. Pogue, D. Adamski, M. Metz, GSMNP 0047; 36, Hyperstrotia villificans, f, North Carolina, Swain Co.: Hazel Creek, Bradshaw Cemetery, GSMNP, 2040 ft., 23 July 2007, M. Pogue, D. Adamski, M. Metz, GSMNP 0046; 37, Hyperstrotia villificans, f, Maryland, Montgomery Co.: Colesville, 8 Aug. 1980, D. C. Ferguson; 38, Abablemma brimleyana, m, Florida, Putnam Co., University Reserve, Welaka, 5 Apr. 1972, D. C. Ferguson; 39, Abablemma brimleyana, f, South Carolina, Charleston Co., Wedge Plantation, McClellanville, 3 June 1978, D. C. Ferguson; 40, Arugisa lutea, m, Florida, Monroe Co., Big Pine Key, 26 Nov. 1976, D. C. Ferguson; 41, Arugisa lutea, m, Maryland, Dorchester Co., Decoursey Bridge Rd., 13 Aug. 1993, J. Glaser; 42, Gabara subnivosella, m, Tennessee, Blount Co., Ace Gap Trailhead, 24 July 2000, M. G. Pogue; 43, Gabara subnivosella, m, Kansas, Johnson Co., Shawnee Mission Park, 17 June 1962, J. R. Heitzman; 44, Gabara subnivosella, m, Massachusetts, Nantucket Co., Nantucket, 12 July, 1928; 45, Gabara subnivosella, m, Massachusetts, Dukes Co., Martha’s Vineyard, 23 July, F. M. Jones; 46, Isogona tenuis, m, Tennessee, Blount Co., Campsite 6, along Scott Mtn. Trail, 3324 ft., 5 Aug. 2003, M. G. Pogue, USNM 00219096; 47, Isogona tenuis, f, Texas, Hidalgo Co., Santa Ann Refuge, 9 Mar. 1977, A. & M. E. Blanchard; 48, Isogona tenuis, f, Texas, Nickel Creek, Guadalupe Mts., 5000 ft., 22 May 1973, A. & M. E. Blanchard; 49, Nigetia formosalis, m, North Carolina, Haywood Co., Cataloochee, downhill from pull-off, 3440 ft., 19 July 2007, M. Pogue, D. Adamski, M. Metz; 50, Scolecocampa liburna, m, Tennessee, Sevier Co., Greenbrier area, end of Ramsey Cascade Rd., uphill from parking lot, 2066 ft., 26 June 2004, M. G. Pogue, USNM 00221326; 51, Scolecocampa liburna, m, Tennessee, Sevier Co., Greenbrier area, end of Ramsey Cascade Rd., uphill from parking lot, 2066 ft., 26 June 2004, M. G. Pogue, USNM 00221327; 52, Sigela brauneata, m, Tennessee, Cocke Co., 0.6 mi from Jct. of Rt. 32 on road to Cosby campground, 1765 ft., GSMNP, 28 July 2007, M. Pogue, D. Adamski, M. Metz, GSMNP 1907; 53 Sigela penumbrata, m, Texas, Nueces Co., N. Padre Island, 21 June 1977, A. & M. E. Blanchard; 54, Sigela penumbrata, m, Florida, Monroe Co., Big Pine Key, 26 Nov. 1976, D. C. Ferguson; 55, Sigela penumbrata, f, Florida, Dade Co., Homestead, 26 Nov. 1976, D. C. Ferguson.