Morphometric and genetic differentiation in isolated populations of the endangered Mesoamerican stingless bee Melipona yucatanica (Hymenoptera: Apoidea) suggest the existence of a two species complex

1. May-Itzá, W.d.J.
2. Quezada-Euán, J.J.G.
3. Medina, L.A.M.
4. Enríquez, E.
5. de la Rúa, P.