Foraging efficiency and outcomes of interactions of two pupal parasitoids attacking the invasive spotted wing drosophila

•Pachycrepoideus vindemiae and Trichopria drosophilae readily attack the invasive Drosophila suzukii in much of its invaded regions.•T. drosophilae was more efficient than P. vindemiae in laboratory tests of D. suzukii parasitism.•When interspecific competition occurred, the first parasitoid species to have oviposited outcompeted the later parasitoid species.•Both parasitoid species discriminated against hosts previously parasitized by the other parasitoid species.•Interspecific competition potentially reduced the overall impact by both parasitoids on host suppression.