1. Aguilar I, Sommeijer M (2001) The deposition of anal excretions by Melipona favosa foragers (Apidae: Meliponinae): behavioural observations concerning the location of food sources. Apidologie 32:37–48.
https://doi.org/10.1051/apido:2001109
2. Amano K, Nemoto T, Heard T (2000) What are stingless bees and why and how to use in crop pollination? A review. Japan Agricultural Research Quarterly 34:183–190
3. Araújo E, Costa M, Chaud-Netto J, Fowler H (2004) Body size and flight distance in stingles bees (Hymenoptera: Meliponini): inference of flight range and possible ecological implicatons. Braz J Biol 64:563–568.
https://doi.org/10.1590/S1519-69842004000400003
4. Ascher JS, Pickering J (2017) Discover life: bee species guide and world checklist (Hymenoptera: Apoidea: Anthophila)
http://www.discoverlife.org/mp/20q?guide=Apoidea_species&flags=HAS
. Accessed 6 July 2017
5. Ayala R, Gonzalez V, Engel M (2013) Mexican stingless bees (Hymenoptera: Apidae): diversity, distribution, and indigenous knowledge. In: Vit P, Pedro S, Roubik D (eds) Pot-honey a legacy of stingless bees, 1st edn. Springer, New York, pp 135–152