@inbook{inbooka6656570,
title   = {Speciation, development, and the conservative egg of the stingless bee genus Melipona},
author = {Velthuis, Hayo Hans Willen and Laurino, Marilda Cortopassi and Pereboom, Zjeffrie},
year = {2003},
publisher = {Nederlandse Entomologische Vereniging},
booktitle   = {Proceedings of the Section Experimental and Applied Entomology of the Netherlands Entomological Society (N.E.V.}
}