Records of X. potentillae (Retzius) X. brevitarsis (Thomson) (Hymenoptera: Cynipidae) derived from herbarium specimens of potentilla species at the British and Irish Herbarium
Records of X. potentillae (Retzius) X. brevitarsis (Thomson) (Hymenoptera: Cynipidae) derived from herbarium specimens of potentilla species at the British and Irish Herbarium