Social wasps were collected in a eucalyptus (Eucalyptus urograndis, a genetically enhanced eucalyptus) plantation in Juiz de Fora, state of Minas Gerais, southwestern of Brazil, by using a variety of sampling methods, including active capture and baited traps set at two microhabitats. Six new records of social wasps for this region were obtained during the study: Brachygastra lecheguana Latreille, Polybia ignobilis Haliday, Polybia occidentalis Olivier, Polybia platycephala (Richards), Protonectarina sylveirae Saussure, and Protopolybia exigua Saussure (Hymenoptera: Vespidae). The active capture method sampled the greatest number of species. Baited traps installed in the canopy sampled a greater number of individuals of social wasps than those set on the trunks of eucalyptus trees. Fruit based baits captured a greater number of social wasp species than those baited with a protein derivative. Once no method was able to sample all species, we concluded that the efficiency of a survey can be maximized by using traps with a variety of different baits, in combination with active capture methods.
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Vol. 104 • No. 3