1. Adams, J., E. D. Rothman, W. E. Kerr and Z. L. Paulino, 1977. Estimation of the number of sex alleles and queen matings from diploid male frequencies in a population ofApis mellifera.Genetics 86:583?596.
2. Bego, L. R. and C. A. de Camargo, 1984. On the occurrence of giant males inNannotrigona (Scaptotrigona) postica Latreille (Hymenoptera, Apidae, Meliponinae).Bolm. Zool. Univ. S. Paulo 8:11?16.
3. Bertram-Lucht, E., 1962. Das postembryonale Wachstum von Hirnteilen beiApis mellifera L. andMyrmeleon europaeus L.Z. Morph. Ökol. Tiere 50:543?575.
4. Camargo, A. C. de, 1972. Determinação de castas emScaptotrigona postica Latreille (Hymenoptera, Apidae).Rev. Brasil. Biol. 32:133?138.
5. Campos, L. A. de O., 1978. Sex determination in bees. VI. Effect of a juvenile hormone analogue in males and females ofMelipona quadrifasciata (Apidae).J. Kansas Entom. Soc. 51:228?234.