Lithosia nigrifrons (Moore, 1872) Volynkin & Černý, 2025

Volynkin, Anton V. & Černý, Karel, 2025, On the taxonomy of the genera Katha Moore, Tarika Moore, Cernyia Bucsek and Churingosia Volynkin & Černý, stat. n. with the description of a new genus and thirteen new species (Lepidoptera: Erebidae: Arctiinae: Lithosiini: Lithosiina), Ecologica Montenegrina 87, pp. 1-45 : 5

The T. nigrifrons species-group

Species of the species-group are characterised by the substantial sexual dimorphism with larger, more broad-winged and yellow-coloured females while males have a narrower forewing with a strongly convex anal margin and pale beige ground colour; in fresh specimens, the forewing also has a deep yellow distal suffusion, which gets completely faded even in slightly worn individuals. The male genital capsules are very uniform within the group and the reliable differences between species are found only in the vesica structures. The latter has the same ground plan within the group characterised by the combination of several diverticula, which are herein referred to as the proximal utricular, medial recurved, proximal-medial, distal-medial, and distal diverticula. The female genitalia are characterised by the elongate corpus bursae with a posterior section having thick gelatinous and rugose walls and postero-lateral protrusions.