Lithosia postmaculosa, Matsumura, 1927

Volynkin, Anton V., 2021, Tortrilema, a new subgenus of the genus Manulea Wallengren with description of a new species from Vietnam (Lepidoptera: Erebidae: Arctiinae: Lithosiini), Ecologica Montenegrina 48, pp. 9-17 : 14

The M. postmaculosa species-group

Diagnosis. Species of the species-group externally differ from those of the M. labahe species-group in the substantial sexual dimorphism: females have not only a somewhat more elongate forewing with a more elongate apex but also lack a medial shade and a discal spot. The detailed comparison of the genitalia structures of the species-groups is provided above in the diagnosis of the M. labahe species-group.