A new subgenus of Nabis Latreille (Heteroptera: Nabidae) from South America and a key to the subgenera worldwide, with notes about comparative morphology of the genitalia

Abstract A revision of the Nabis punctipennis complex is here provided. Nabis (Austronabis) subgen. nov. (type species: N. (A.) punctipennis Blanchard) from South America is described based on male and female genitalia. This new subgenus is compared with all the other Nabis subgenera in the world and a key for 13 Nabis subgenera is provided. Nabis (A.) subgen. nov. is composed of: N. (A.) argentinus Meyer-Dür, N. (A.) faminei Stål, N. (A.) paranensis Harris and N. (A.) punctipennis. Redescriptions of each species are given, with images of their male and female genitalia, including new characters of the male genitalia and new distributional records. We also discuss the taxonomic position of Nabis ashworthi Faúndez and Carvajal and propose that it should be transferred to the subgenus Nabis (Dolichonabis) Reuter, new combination.