Okinawepipona, Nguyen & Nguyen & Bozdoğan, 2018

Nguyen, Lien Thi Phuong, Nguyen, Ha Thi Thu & Bozdoğan, Hakan, 2018, Contribution to the genus Okinawepipona Yamane (Hymenoptera: Vespidae: Eumeninae) from Vietnam, with description of a new species, Zootaxa 4462 (4), pp. 592-596 : 595-596

Key to all known species of the genus Okinawepipona

The characters used are applicable to both sexes unless the sex is specified.

1. Body covered with very coarse punctures; mesoscutum, scutellum and metanotum strongly convex dorsally; propodeum with dorsal part strongly rugose and convex, dorsal and posterior surfaces separated by sharp edge; metasomal tergum I in dorsal view about twice as wide as long.......................................... O. curcipunctura Nguyen & Xu (2014) .

- Body covered with less coarse punctures; mesoscutum, scutellum and metanotum slightly convex; dorsal surface of propodeum not convex, dorsal and posterior surfaces separated by blunt edge; tergum I in dorsal view slightly less than twice as wide as long.......................................................................................... 2

2. Propodeum rugose; tergum I in lateral view strongly convex anteriorly................................ O. yty , sp. nov.

- Propodeum smooth or with striae; tergum I in lateral view slightly convex anteriorly................................ 3

3. Clypeus in lateral view weakly convex and then straight dorsally, apical margin shallowly emarginated medially, apical teeth blunt; posterior surface of propodeum shiny, almost smooth in lateral area and with weak and short oblique striae along median carina; scutellum and metanotum black; metasomal terga IV-VI entirely black............ O. nigra Nguyen & Xu (2014) .

- Clypeus in lateral view moderately convex, apical margin deeply emarginated medially, apical teeth sharp; posterior surface of propodeum with striae; scutellum and metanotum largely yellow to orange-yellow; metasomal terga IV-VI black, each with yellow to orange-yellow apical band........................................... O. kogimai (Giordani Soika, 1986)