↑ Sharkey M.J. (2007). Phylogeny and Classification of Hymenoptera.
↑ "Phylogenetic relationships among superfamilies of Hymenoptera", Sharkey M.J., Carpenter J.M., Vilhelmsen L., et al. 2012. Cladistics 28(1): 80-112.
Moure, J. S., and G. A. R. Melo / Moure, Jesus Santiago, Danúncia Urban, and Gabriel A. R. Melo, org (2007). "Nomadini Latreille, 1802". Catalogue of bees (Hymenoptera, Apoidea) in the neotropical region, 578–599.
Rightmyer, Molly G. (2008). "A review of the cleptoparasitic bee genus Triepeolus (Hymenoptera: Apidae). Part I".
Further reading
Ross H. Arnett (30 July 2000). American Insects: A Handbook of the Insects of America North of Mexico. CRC Press. ISBN978-0-8493-0212-1.