Adult male Trypoxylon lactitarse (Saussure), T.
rogenhofrei (Kohl) and T. aurifrons (Shuckard) were obtained
from trap-nests placed in the Central Apiary of the Federal
University of Viçosa, Viçosa, MG and on the farm Bela
Vista, Conceição do Castelo, ES, Brazil. The trap-nests were
made of bamboo were 10 to 18 cm long and 6 to 12 mm in
diameter. Those occupied by Trypargilum were taken to the
laboratory where they were kept until the emergence of the
individuals.