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 : 16

Lasionycta subdita species-group

The L. subdita species-group contains three allopatric species characterized by the male digitus and female ductus bursae. Th e digitus is heavily sclerotized with a nearly perpendicular orientation to the valve and bears a flange-like ridge or pointed projection at the base. Th ose of other species-groups are less sclerotized, are oblique to the valve, and have a simple elongate shape. Th e uncus is dorsoventrally flattened and the tip is ovate. Th e vesica is 1.5× as long as the aedeagus, has a slightly expanded subbasal and mesial section, and is weakly twisted beyond a 90° subbasal dorsal and rightward bend. It bears 3–5 stout basal cornuti and a distal elongate patch of spines. The male antenna is bipectinate with T-shaped individual segments. Th e female has a dorsoventrally flattened ductus bursae with a unique sclerotized asymmetrical bulge toward the right near the corpus bursae. Th e ovipositor lobe is membranous and covered with hair-like setae. Th e appendix bursae arises from the dorsal corpus bursae and projects dorsally, 30° anteriorly, and leftward proximally, turning posteriorly before the apex.