Biodiversity and pollen feeding habits of syrphids in olive groves and surrounding landscape in Northeastern Portugal during spring

Villa, A.M., Santos, S.A.P., Marrão, R., Pinheiro, L.A., López-Sáez, J.A., Aguiar, C., Pereira, J.A.(2019). Biodiversity and pollen feeding habits of syrphids in olive groves and surrounding landscape in Northeastern Portugal during spring. In: Perdikis, D., Sacchetti, P., Belcari, A., Rosi, M.C. (Eds.), Proceedings of the 8th meeting at Florence, Italy (4-7 June 2018), IOBC-WPRS Bulletin, 141, pp. 178-182