Occurrence of hymenopteran parasitoids in residential turfgrass

Occurrence of hymenopteran parasitoids was evaluated in various residential lawns in Spalding Co. Georgia. Most wasps collected were Chalcidoidea (55%) and Platygastroidea (29%). Among total parasitic wasps collected, 26.5% were mymarids which included Gonatocerus sp. and Mymar sp. Eulophids were less abundant in centipedegrass compared with other turfgrasses and those identified were Aprostocetus sp. and Pnigalio sp. About 18.2% of total wasps collected were trichogrammatid wasps and were more abundant in St. Augustinegrass or tall fescue than in zoysiagrass. Platygastrid wasps, Allotropa sp. and Fidiobia sp. were most often collected from zoysiagrass and St. Augustinegrass. Scelionids represented 23% of the total parasitoid collected. Baeus sp., a scelionid was found in all turf types except in tall fescue while another scelionid, Trimorus sp. was evenly found among all turfgrass spp.