Testis length distinguishes haploid from diploid drones in Melipona quadrifasciata (Hymenoptera: Meliponinae) Mara Garcia Tavares, André Southernman Teixeira Irsigler and Lucio Antonio De Oliveira CamposApidologie, 34 5 (2003) 449-455DOI: https://doi.org/10.1051/apido:2003045
