Pachysomoides sp. (Hymenoptera: Ichneumonidae: Cryptinae) and Megaselia scalaris (Diptera: Phoridae) parasitoids of Mischocyttarus cassununga (Hymenoptera: Vespidae) in Viçosa, Minas Gerais State, Brazil

The Mischocyttarus genus has the greatest number of species among the social wasps and independent founders initiate their colonies. This group shows a greater incidence of parasitism in its nests than the swarming species. The objective of this studywas to verify the occurrence and identify parasitoid species in nests of the Miscbocyttarus cassununga (Von Ihering) (Hymenoptera: Vespidae) wasp. The experiment was carried out at the Federal University of Vicosa, Minas Gerais State, Brazil, at 25 ± 2°C, 70 ± 10% relative humidity and 12 hours light phase. Ten M. cassununga nests were collected from the UFV campus area and placed individually in plastic cups (0.19 x 0.145 x 01.45 cm). The number and viability of alveoli, parasitoid emergences, and M. cassununga nest size were observed. The M. cassununga nest parasitoids were identified as Pachysomoides sp. (Hymenoptera: Ichneumonidae: Cryptinae) and Megaselia scalaris (Loew) (Diptera: Phoridae), which represents the first report of these parasitoids in this host in Brazil.