Castro, M.M. do N., Garófalo, C.A., Serrano, J.C. and Silva, C.I. 2013. Temporal variation in the abundance of Orchid Bees (Hymenoptera: Apidae) in a Neotropical Hygrophilous Forest. Sociobiology. 60, 4 (Dec. 2013), 405–412. DOI:https://doi.org/10.13102/sociobiology.v60i4.405-412.