Bellenden siguniang (A–C) and B. jingyuanensis (D). A male habitus B head and right maxillary palpus (yellow arrows indicate anterolateral margin of the frontal rostrum; red arrows indicate segmentation of the maxillary palpus) C–D aedeagus, in dorsal view. Abbreviation: mp1–4 = maxillary palpomeres I–IV. Scales bars A 0.5 mm; B 0.3 mm; C–D 0.2 mm.