Ophiogomphus (Ophionurus) longihamulus Karube, 2014

Ngo, Quoc Phu & Nguyen, Minh Ty, 2021, The genus Ophiogomphus Lieftinck, 1964 in Vietnam, with descriptions of the female of O. minimus Karube, 2014 and O. phantoani sp. nov. (Odonata: Gomphidae), Zootaxa 5061 (1), pp. 134-144 : 139

Ophiogomphus (Ophionurus) longihamulus Karube, 2014

( Figs 20, 21 , 28, 29 )

Notes. This species was described from Pia Oac National Park of northern Vietnam based on male and female specimens ( Karube 2014). Ophiogomphus longihamulus is characterized by its long anterior hamuli ( Fig. 20 ).

Distribution ( Fig. 36 ). Vietnam: Cao Bang Province; China: Yunnan Province ( Karube 2014; Zhang 2019).

Figures

FIGURE 36. Distribution map of four Ophiogomphus spp. in Vietnam. O. longihamulus (red circle); O. minimus (purple circle); O. phantoani sp. nov. (yellow circle); O. sinicus (green circle). Map background source © GoogleTM Earth Service version 7.3.3.7786.

FIGURES 20–27. Accessory genitalia [20, 22, 24, 26] in lateral view and cornua of glans [21, 23, 25, 27] in ventral view of Ophiogomphus spp. (20–21), O. longihamulus (rearranged from Karube 2014: Fig. 16 e, g); (22, 23), O. minimus (rearranged from Karube 2014: Fig. 18 e, g); (24, 25), O. phantoani sp. nov.; (26, 27), O. sinicus, Cao Bang Province.

FIGURES 28–35. Female occiput [28, 30, 32, 34] & abdominal end [29, 31, 33, 35] in ventral view of Ophiogomphus spp. (28, 29), O. longihamulus (rearranged from Karube 2014: Fig. 16 j, k); (30, 31), O. minimus, Nam Nung Nature Reserve; (32, 33), O. phantoani sp. nov.; (34, 35), O. sinicus (rearranged from Chao 1990: Fig. 10 & Zhang 2019: p. 424).