A–H Bathanthidium (Bathanthidium s. str.) paco Tran & Nguyen, sp. nov., holotype, female A head in frontal view B mandible in frontal view C propodeum in lateral view, showing the fovea behind propodeal spiracle D mesoscutum and scutellum in dorsal view E fore wing in dorsal view F habitus in dorsal view G habitus in lateral view H nest entrance. Scale bars: 5 mm (H); 1 mm (A, C, E, F, G); 0.5 mm (B, D).