Fig. 10 in Illustrated identification guide to the Nordic aphids feeding on Conifers (Pinophyta) (Insecta, Hemiptera, Sternorhyncha, Aphidomorpha)

Fig. 10. Adelges (Adelges) tardus (Dreyfus, 1888). Galls on Picea abies. A–B. Almost full-grown. C. Almost mature. D–E. Mature, first gallicolae have emerged. F–G. Fully opened galls. Scale bars: 10 mm.Published as part of Albrecht, Anders Christian, 2017, Illustrated identification guide to the Nordic aphids feeding on Conifers (Pinophyta) (Insecta, Hemiptera, Sternorhyncha, Aphidomorpha), pp. 1-160 in European Journal of Taxonomy 338 on page 53, DOI: 10.5852/ejt.2017.338, http://zenodo.org/record/383434