Danforth, B.N. & G.O. Poinar (2011) Melittosphex burmensis (Apoidea: Melittosphecidae): detailed description of the morphology, classification, antiquity, and implications for bee evolution. J. Paleontology 85(5): 882–891 [pdf]
Danforth, B.N. & G.O. Poinar (2011) Melittosphex burmensis (Apoidea: Melittosphecidae): detailed description of the morphology, classification, antiquity, and implications for bee evolution. J. Paleontology 85(5): 882–891 [pdf]