Norwegian Journal of Entomology. 2014, 61 (2), 186-189
The two aphid species Panaphis juglandis (Goeze, 1778) and Chromaphis juglandicola (Kaltenbach, 1843) were recorded on leaves of common walnut (Juglans regia L.) in June and July 2014 in the Botanical garden at Tøyen, Oslo. Both species are solely associated with the common walnut, on which they may cause damages both on leaves and fruits. The two species are hitherto not reported from Norway. Biology and distribution are briefly commented on.
Posted here with permission from the journal.
Norwegian Journal of Entomology: http://www.entomologi.no/journals/nje/nje.htm
Norsk entomologisk forening: http://www.entomologi.no/index.htm