Lasionycta subdita

Crabo, Lars & Lafontaine, Donald, 2009, 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, ZooKeys 30 (30), pp. 1-156 : 17

Key to the L. subdita species-group

1. Distal forewing mottled with patches of dark scales; fringe checkered; occurring in northeastern North America............................................. L. subdita

– Distal forewing smooth with inconspicuous dark areas limited to the subterminal line; fringe nearly unicolorous; occurring in western North America 2

2. Distal claviform spot a black bar; occurring in Rocky Mountains south of Beartooth Plateau on Montana-Wyoming border..................... L. conjugata

– Claviform spot without a black bar; occurring north and west of Beartooth Plateau...................................................................................... L. fergusoni