New taxa of Euxoa decora (Denis & Schiffermüller, 1775) and Euxoa heringi (Staudinger, 1877) (Noctuidae, Agrotina) species complex from Asia (Lepidoptera: Noctuidae)

The diagnosis and description of three new species and five new subspecies of Euxoa are provided. The main external and genitalia features of the new species and its closest relatives are characterised and discussed. The imagoes are illustrated on four tables with 32 colour figures, and the genitalia are presented on four monochromatic plates with figures of 16 males and 8 females. Furthermore, the lectotype of Euxoa heringi marcens (Christoph, 1893) has been designated.