Palaeagrotis Hampson, 1907

Volynkin, Anton V., Gyulai, Péter & Behounek, Gottfried, 2015, A review of the genus Palaeagrotis with description of a new species from South Mongolia (Lepidoptera, Noctuidae), Zootaxa 3956 (1), pp. 113-120 : 114

Genus Palaeagrotis Hampson, 1907

Palaeagrotis Hampson, 1907 , Annals and Magazine of Natural History, series 7, 19: 252 (Type-species: Hadena inops Lederer, 1853 , by original designation).

Diagnosis. Medium-sized moths. Male antennae serrate and fasciculate, female antennae filiform. Forewing trigonal, moderately broad. Ground colour of forewing varies from dark brown to reddish brown or greenish brown. Wing pattern with all main noctuoid elements. In the male genitalia uncus long, narrow, apically pointed. Tegumen moderately long, broad, penicular lobes broad, trapezoidal with rounded angles; vinculum short, Vshaped; juxta shield-like with broad and long apical extension. Valva elongated, moderately broad, distally narrowed; cucullus relatively small, slightly separated, trigonal; corona presented; costa well sclerotised, costal extension short, trigonal; sacculus short and broad; clasper strongly sclerotised, almost straight; harpe strong, curved, distally narrowed, apically rounded. Aedeagus large, cylindrical, slightly curved; carina with two or three fields of strong spinules; vesica membranous, distally directed, with one or two short diverticula and plate-like or spine-like cornuti. In the female genitalia ovipositor broad, short, quadrangular, with ring of long hair-like setae. Gonapophyses long and thin. Ostium bursae weakly sclerotised. Posterior three-quarter of ductus bursae well sclerotised, with sclerotised folds (in P. inops and P. adrienneae ) or much shorter, somewhat oval, less sclerotised (in P. sibirica ); anterior quarter of ductus bursae membranous, more or less wrinkled. Corpus bursae membranous, relatively short and ovoid (in P. inops and P. adrienneae ) or very long and narrow (in P. sibirica ); appendix bursae small, conical, rounded, laterally positioned.

According to the wing pattern and structure of genitalia, the genus subdivided clearly into the two species groups.