This is a pioneering study involving the fauna of parasitoids in the southwestern region of Goiás State, Brazil, besides being one of the few conducted in a fragment of Cerrado. In a period of 20 days, hymenopteran parasitoids were colleted using three methods of capture: Malaise, Möricke and sweep net in the vegetation. Parasitoids of 7 superfamilies were found, distributed in 27 families, the most abundant being Ichneumonidae and Ceraphronidae. No method of capturing collected all the families present, showing that the combined use of three of these methods is ideal for a study of fauna survey of hymenopteran parasitoids of a region or fragment. Parasitoid wasps act as biological agents and pollinators, thus, even if small (only 16 ha), the sample fragment performed important environmental functions and demonstrated the importance of maintaining native forest fragments near the crops/plantations.
Hymenoptera; parasitoid; biodiversity; cerrado