O. M. P. Duarte, Martins, C. C. C., Waldschmidt, A. M., and Costa, M. A.,
“Occurrence of multiple nucleolus organizer regions and intraspecific karyotype variation in Scaptotrigona xanthotricha Moure (Hymenoptera, Meliponini)”, vol. 8, pp. 831-839, 2009.