Molecular phylogeny of the stingless bees (Apidae, Apinae, Meliponini) inferred from mitochondrial 16S rDNA sequences Marco A. Costa, Marco A. Del Lama, Gabriel A.R. Melo and Walter S. Sheppard Apidologie, 34 1 (2003) 73-84 DOI: 10.1051/apido:2002051