“…Except for Apis mellifera (Apinae) (Louveaux, 1977) and Hypanthidium foveolatum (Megachilinae) (Gracielle et al, 2009), which have around 200 and 28 follicles per testis, respectively, other Apidae studied have three or four follicles per testis. For instance, Centris, as well as other Apinae (Ferreira et al, 2004;Lima et al, 2006;Fiorillo et al, 2009;Brito et al, 2010), Anthophorinae (Araújo et al, 2010b), Melittinae and some Megachilinae (Roig-Alsina and Michener, 1993;Ferreira et al, 2004), present four follicles per testis. On the other hand, Andreninae, Colletinae, Halictinae, the majority of the Megachilinae (Ferreira et al, 2004) and the wasps Crabronidae (Zama et al, 2007;Moreira et al, 2008) and Vespidae (Dirks and Sternburg, 1972;Brito et al, 2005;Bushrow et al, 2006;Araújo et al, 2010a) present three follicles per testis.…”