Palaeocantharis gen. nov.; Sanaungulus Fanti et al., 2018.

General characteristics: Body small (2.6–6.0 mm); head prognathous to slightly deflexed (Figs 4A, B, 6A, B, 8A, B); frontoclypeal suture absent; eyes large, hemispherically prominent; apical maxillary and labial palpomeres bilaterally symmetric, securiform; mandibles usually toothed (Figs 6A, 8A, B), sometimes simple (Fig. 4A, B); gular sutures close, nearly confluent (Supporting Information, Fig. S1A–C); antennae 11-segmented. Pronotum simple, not elaborately sculptured, without lateral glandular pores (Figs 4C, 6C, 8D); mesopreepisternum contiguous; metaventrite with midline long, complete or near so, and branched. Elytra entirely covering abdomen (Fig. 5) or shortened in various degree, with abdomen and hindwings partially exposed (Figs 3, 7); disc usually deeply punctate, sometimes forming coarse reticulation (Figs 4D, 6D), or sometimes smooth (Fig. 8D). Tibial spurs usually present, rarely absent. Abdomen with large lateral eversible glandular pores (Supporting Information, Fig. S1L); ventrite 7 of male with apical margin usually entire or concave (Figs 4E, 8F), sometimes deeply emarginate; ventrite 8 of male symmetrical, forming narrow, elongate process. Aedeagus symmetrical (Figs 4E, 8F). Ovipositor with paired well-developed palpiform gonostyli (Fig. 6E).