Abstract. The aim of this work was to assess the diversity of Hymenoptera in an orange orchard / Brazilian Savannah fragment interface in Descalvado, State of São Paulo, Brazil, using Moericke, Malaise and pitfall traps. The sampling was carried out from February to June 2006, when 5,148 specimens of Hymenoptera, from 12 superfamilies and 36 families, were caught: Chalcidoidea (1,885 specimens; 36.6% out of the total; 14 families), Ichneumonoidea (715; 13.9%; 2), Vespoidea (554; 10.8%; 5), Apoidea (444; 8.6%; 2), Diaprioidea (430; 8.4%; 2), Chrysidoidea (366; 7.1%; 3), Platygastroidea (340; 6.6%; 2), Ceraphronoidea (211; 4.1%; 2), Cynipoidea (107; 2.1%; 1), Evanioidea (83; 1.6%; 1), Tenthredinoidea (7; 0.1%; 1) and Trigonaloidea (6; 0.1%; 1). The Moericke and Malaise traps installed in the Brazilian Savannah fragment were responsible for capturing the highest number of Hymenoptera (2,158 specimens; 41.9% out of the total collected and 1,739; 33.8%, respectively), followed by the Moericke traps placed in the orange orchard (1,123; 21.8%) and by the pitfall traps (128; 2.5%). The results indicate that the diversity of families of Hymenoptera in the Brazilian Savannah fragment is greater than in the culture of citrus and expresses the greatest diversity of hosts existing in that environment. The study made clear that the combined use of different kinds of traps allows the capture of a large diversity of Hymenoptera.