New species of ancistrocerus (Vespidae, Eumeninae) from the neotropics with a checklist and key to all species south of the Rio Grande

Abstract

A new species of potter wasp from South America, Ancistrocerus sur sp. n., is described. A species key and checklist for all described Ancistrocerus that occur south of the Rio Grande are provided. New synonymy includes Odynerus bolivianus Brèthes = Ancistrocerus pilosus (de Saussure), while the subspecies bustamente discopictus Bequaert, lineativentris kamloopsensis Bequaert, lineativentris sinopis Bohart, tuberculocephalus sutterianus (de Saussure), and pilosus ecuadorianus Bertoni, are all sunk under their respective nominotypical taxa.