Summer diapause in cereal aphid parasitoids: a field survey along a longitudinal climatic gradient across Europe in 2022 and 2023

This dataset contains the field data collected in 2022 and 2023 to assess summer diapause incidence in cereal aphid parasitoids along a longitudinal climatic gradient across Europe, from western France to the Czech Republic (~1200 km). Mummies parasitizing cereal aphids were sampled in wheat fields at multiple sites during late spring, and subsequently reared under laboratory conditions to determine diapause incidence, adult emergence rates, and mortality. All variables included in this dataset are fully described in the R script available on GitHub (https://github.com/lenajego/IRP-GRADIENTS/blob/main/IRPGRADIENTS_Summer_Diapause_Field_Survey_2023_LJ_V5.R)