A new species of Plebeia Schwarz (Hymenoptera: Apidae) from the Argentine Yungas

A new species of Plebeia Schwarz (Hymenoptera: Apidae) from Argentina is described and illustrated. Plebeia mansita Alvarez & Rasmussen sp. nov. occurs in the extreme northwest of the country and is restricted to the biogeographic province of the Yungas, where it is found at altitudes above 1,000 m. Observations on behavior, biology and nesting substrates of the new species are presented