Genus Asymmetritania Storozhenko, gen. nov.

Type species: Stolzia vietnamensis Storozhenko, 2020, here designated.

Description. Head in frontal view oval; frontal ridge narrow, almost reaching the clypeus (Fig. 27). Face in lateral view reclinate; frontal ridge projecting between the antennae but forming a relatively short rostrum (Figs. 25, 26). Ventral genicular lobes of the hind femora narrowly triangular with apex obtuse, without spine (Fig. 14). Male 10th abdominal tergite with furculae. Male supra-anal plate long, with a median basal impression, lateral margins with a pointed tooth in apical third, apex rounded (Figs. 13, 30). Male cerci compressed, short, conical, with or without a small preapical tooth. Valves of ovipositor short, with apex rounded and strongly dentate (Fig. 29). Male genitalia: epiphallus strongly asymmetrical; bridge narrow; left lophus large, extending; right lophus small; ancorae absent; oval sclerites separated from epiphallus (Figs. 22, 32); apodemes long and narrow; valves of cingulum and apical valves of penis long, completely covered by ectophallic sheath of penis; basal valves of penis connected with apical ones by a short sclerotized or membranous flexure (Figs. 21, 33).

Composition. The genus consists of two species from continental part of South-East Asia.

Etymology. From Latin asymmetrica and the genus name Bettotania . Genus feminine.