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Fjellberg, A. and Viggiani, G. 2021. A new species of <em>Aprostocetus</em> (Hymenoptera: Eulophidae) gall inducer on <em>Astragalus alpinus</em> from Norway. Journal of Entomological and Acarological Research. 53, 1 (Aug. 2021). DOI:https://doi.org/10.4081/jear.2021.9734.