| abstract | Eleven species of Anthoseius De Leon were collected during an extensive survey of phytoseiid mites in Norway. One of the species, Anthoseius parinopinatus, is described as a new taxon and Anthoseius piceae Karg & Edland, A. clavatus Wainstein, and A. toruli Karg & Edland are considered to be junior synonyms of Anthoseius foenilis (Oudemans), A. bakeri (Garman) and A. caucasicus (Abbasova) respectively. A key bas been constructed for the identification of the Anthoseius species represented in the fauna of Norway. Distribution maps are given for eight species and the frequency of Anthoseius species on a range of host plants is presented in tabular form. Picea abies showed the highest frequency of the species of Anthoseius, and eight and nine species were found on Picea abies and Pinus sylvestris, resepctively. |