Survey on Drosophila suzukii and Ceratitis capitata (Diptera: Drosophilidae, Tephritidae) and associated Eucoilinae species (Hymenoptera: Figitidae) in northwestern Argentina. First record of Dicerataspis grenadensis and Leptopilina boulardi as parasitoids of D. suzukii

AbstractThe Southeast Asian-nativeDrosophila suzukii(Matsumura) (Diptera: Drosophilidae), also known as “spotted-wing Drosophila”, is one of the most globally invasive agricultural species. AlthoughD. suzukiiis a pest spread throughout all the Argentinian fruit-growing regions, few information has been published on its impact on local fruit production. Parasitoid species associated withD. suzukiiin Argentina belong to Pteromalidae (Chalcidoidea), Diapriidae (Diaprioidea), both attacking host pupae, and Figitidae (Cynipoidea), which attacks host larvae. Nine Eucoilinae (Figitidae) species, belonging toDicerataspis, Dieucoila, Euxestophaga, Ganaspis, HexacolaandLeptopilinagenera, have been associated withD. suzukiiin Argentina,.Ceratitis capitata(Wiedemann), commonly known as “medfly”, is native to Africa and has a worldwide distribution, covering many tropical, subtropical and temperate regions. In Argentina,C. capitatahas been associated with several native hymenopterous parasitoids belonging to Braconidae (Ichneumonioidea), Eulophidae (Chalcidoidea), Pteromalidae, Diapriidae and Figitidae families. Only two eucoline species,Ganaspis pelleranoi(Brèthes) andRhoptromeris haywardi(Blanchard) have been related to medfly in Argentina. We report new trophic associations between the parasitoidsDicerataspis grenadensisAshmead andLeptopilina boulardi(Barbotin, Carton and Kelner-Pillault) andD. suzukii, andbetween the parasitoidOdontosema albinerveKieffer andC. capitata, after surveys conducted in Tucumán, northwestern Argentina. An annotated checklist and a taxonomic key of Eucoilinae associated with both invasive pests, in Argentina, is also provided.