Intraspecific variation in the stingless bee Melipona beecheii assessed with PCR-RFLP of the ITS1 ribosomal DNA William de Jesús May-Itzá, José Javier Guadalupe Quezada-Euán, Eunice Enriquez and Pilar De La RúaApidologie, 40 5 (2009) 549-555DOI: https://doi.org/10.1051/apido/2009036
