@article{ refId, author = {{de Jes\'us May-Itz\'a, William} and {Quezada-Eu\'an, Jos\'e Javier Guadalupe} and {Enriquez, Eunice} and {De La R\'ua, Pilar}}, encoding = {tex}, title = {Intraspecific variation in the stingless bee Melipona beecheii assessed with PCR-RFLP of the ITS1 ribosomal DNA}, DOI= "10.1051/apido/2009036", url= "http://dx.doi.org/10.1051/apido/2009036", journal = {Apidologie}, year = 2009, volume = 40, number = 5, pages = "549-555", month = "", }