Pachypappa vesicalis Koch, 1856

on Populus, primary host plant


leaves with large, irregular, often pale, bulges, open to the underside. Often three or more galled leaves in close proximity on the same shoot.


Salicaceae, narrowly monophagous

Populus alba, x canescens.

on Picea, Pseudotsuga, secondary host planten


Apterae 0.5-3 mm, pale yellowish white, on thin mycorrhizal root ends with white filamentous wax. Some populations live permanently on the secondary host plant. Not attended by ants.


Pinaceae, oligophagous

Picea abies, glauca, sitchensis; Pseudotsuga menziesii.


Albrecht (2015a, 2017a), Blackman & Eastop (2014), Börner & Franz (1956a), Buhr (1965a), Carter & Danielsson (1993a), Dauphin & Aniotsbehere (1997a), Heie (1980a), Houard (1908a), Krzywiec (1982a), Redfern & Shirley (2011a), Roskam (2009a), Tomasi (2014a).

mod 24.v.2018