Pachypappa populi (Linnaeus, 1758),

Albrecht, Anders Christian, 2015, Identification guide to Nordic aphids associated with mosses, horsetails and ferns (Bryophyta, Equisetophyta, Polypodiophyta) (Insecta, Hemiptera, Aphidoidea), European Journal of Taxonomy 145, pp. 1-55: 25

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Pachypappa populi (Linnaeus, 1758)


Pachypappa populi (Linnaeus, 1758) 

Fig. 19 A, FView Fig; 20View Fig


Apterae 1–2 mm, pale yellowish with wax tufts posteriorly. Cells in abdominal wax gland plates with a small central spot ( Fig. 19AView Fig). Segments 1 and 2 of tarsi less distinctly separated than in P. tremulae (Linnaeus, 1761)  and P. vesicalis Koch, 1856  . Legs longer, hind femur more than 4 × its maximum width. Antennae usually 6-segmented, PT finger-like. Spines at apices of tibiae weak, not much stronger than the hairs on first tarsal segment. Hind tibia on dorsal side bearing 2–5 spine-like hairs with short, blunt apices. Dioecious. Alternating between Populus tremula  ( Salicaceae  ) and Picea abies  roots ( Pinaceae  ), where wax-covered colonies are formed. Anholocyclic hibernation occurs.


F N S. See also Carter & Danielsson (1991).