A new genus and species of coenagrionid damselflies (Insecta, Odonata, Zygoptera, Coenagrionidae) from Vanuatu Author Ober, Stefan V. Author Staniczek, Arnold H. Staatliches Museum für Naturkunde Stuttgart, Abteilung Entomologie, Rosenstein 1, D- 70191 Stuttgart (Germany) ober. smns @ naturkundemuseum-bw. de staniczek. smns @ naturkundemuseum-bw. de text Zoosystema 2009 2009-09-30 31 3 485 497 http://www.bioone.org/doi/abs/10.5252/z2009n3a6 journal article 10.5252/z2009n3a6 1638-9387 5398639 KEY TO THE MALES OF VANUATUBASIS N. GEN. 1. Superior anal appendages ovate in dorsal view, each with two acute, shiny black teeth at the posterior margin ( Fig. 4A, D ); median process at posterior margin of each mesostigmal lamina situated in the middle of mesanepisternum ........................... V. bidens n. comb. — Superior anal appendages more elongated in dorsal view, with acute outer tip directed posteriorly; median process at posterior margin of each mesostigmal lamina situated closer to the dorsal carina ..................................................................................................... 2 2. Superior anal appendages crescent-like in dorsal view, inner angle acute, extended posteriorly ( Fig. 4B, E ); upper pronotal hind ridge sinusoidally shaped, only slightly raised, lower ridge protruding posteriorly, median keel between upper and lower rim distinct; median process at the posterior margin of each mesostigmal lamina strong and roughly quadrangular ( Fig. 5A ) ............................................................ V. malekulana n. comb. — Superior anal appendages roughly paisley-shaped in dorsal view, inner posterior angle flattened, not extended posteriorly ( Fig. 4C, F ); upper pronotal hind ridge only slightly curved, raised, lower ridge not or only slightly protruding posteriorly, median keel between upper and lower rim only faintly pronounced; median process at the posterior margin of each mesostigmal lamina small and rounded ( Fig. 5B ) ..................... V. santoensis n. sp.