Vivallo, Felipe ， Vieira Zanella, Fernando Cesar
2012-05-03 ZOOTAXA 2012 null(卷), 3298(期), (1-16页)
Centris (Paracentris) Cameron is one of the subgenera with the greatest species richness of the bee tribe Centridini. In this paper, Centris nordestina, a new Brazilian species of the subgenus is described, and due to its close relationship with a clade of Andean species, a new biogeographical track is defined uniting northeastern Brazil with the Andes. For the first time a key for the species of the Caatinga region, the semiarid region of northeastern Brazil, is provided.