Chlorogomphus (Sinorogomphus) tunti Needham, 1930

(Figures 24, 25)

Examined specimens. 1 ♂, Khe Ro (15.0444 N, 107.9270 E, altitude 1480 m), Vu Quang National Park, Kim Quang Commune, Vu Quang District, Ha Tinh Province, 2.vi.2020, Q. T. Phan leg.

Notes. Appendages of the male from Vu Quang National Park (Figs 24, 25) resemble those from Bach Ma National Park (Karube 2013: Fig. 14g, h). Chlorogomphus tunti was recorded from Pia Oac National Park (Cao Bang Province) of the North and from Sao La Nature Reserve (Thua Thien Hue Province) and Tay Giang District (Quang Nam Province) of Central Vietnam (Karube et al. 2020; Kompier 2014). We do not follow Zhang (2019) in considering C. tunti a junior subjective synonym of the older name Chlorogomphus suzukii (Oguma, 1926); this issue will be discuss in the future study.