Pachypappa vesicalis Koch, 1856,

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: 27

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Pachypappa vesicalis Koch, 1856


Pachypappa vesicalis Koch, 1856 

Fig. 19B, GView Fig


Diagnosis based on Carter & Danielsson (1991). Resembling P. populi  . Antenna usually 5-segmented, PT extremely short. Cells in abdominal wax gland plates with a larger central spot ( Fig. 19BView Fig). Spines at apices of tibiae very robust, much stronger than the hairs on first tarsal segment. Dorsal hairs on hind tibia with long, pointed apices. Dioecious. Alternates between white poplar Populus alba  ( Salicaceae  ) and Picea  roots ( Pinaceae  ) where the aphids live in wax nests similar to those of Pachypapella lactea ( Carter & Danielsson 1991)  .


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