Pollen residues in nests of Centris tarsata Smith (Hymenoptera, Apidae, Centridini) in a tropical semiarid area in NE BrazilMarcos da Costa Dórea, Cândida M.L. Aguiar, Luís E.R. Figueroa, Luciene C. Lima E. Lima and Francisco de Assis R. dos SantosApidologie, 41 5 (2010) 557-567DOI: https://doi.org/10.1051/apido/2010005