Illustrated identification guide to the Nordic aphids feeding on Conifers (Pinophyta) (Insecta, Hemiptera, Sternorhyncha, Aphidomorpha) Author Albrecht, Anders Christian text European Journal of Taxonomy 2017 2017-07-24 338 1 160 journal article 22023 10.5852/ejt.2017.338 be9f3ab9-3131-4e11-8d29-a94275ffaac9 2118-9773 3834349 86786AB1-4A1A-4A1E-B42B-53B73D66ED60 Adelges (Adelges) tardoides (Cholodkovsky, 1911) Diagnosis In most respects similar to A. laricis . Al. gallicolae: ant. III longer than IV; glands (including premarginal) developed, abundant wax wool produced. Holocyclic and dioecious, alternating between Picea and Larix (see also p. 25). Galls 5–15 mm , widely dispersed, usually singly on their branch, opening late June–September. Gallicolae emerge from late July to August; secreting abundant wax. Recorded primary hosts Pinaceae : Picea abies . Distribution Europe. Not yet in the Nordic countries.