Pemphigus populi Courchet, 1879
club-shaped poplar-gall aphid
on Populus, primary host plant
Populus nigra, Hungary, Mosonmagyaróvár © László Érsek: young gall (early May)
opened gall with fundatrix
a month later
apterae
alatae
Populus nigra, Spain, prov. Léon, Astorga; © Nicolás Pérez
Populus nigra cv ‘Italica’, Belgium, prov. Liège, Sclessin; © Jean-Yves Baugnée.The gall is unusually high, possibly because it is still young.
opened gall
Populus nigra cv ‘Italica’, Overschie © Ben van As: the lower gall is about to burst open at the tip
gall
the gall usually is green and almost always narrowed at the base.
hostplants
Salicaceae, narrowly monopgagous
Populus laurifolia, nigra, tadshikistanica.
gall
aphid colonies on the roots.
secondary hostplants
Fabaceae, oligophagous
Lathyrus pratensis; Medicago lupulina; Melilotus altissimus.
synonyms
Pemphiginus populi; Pemphigus hederae de Horváth, 1894.
references
Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Barbagallo & Massimino Cocuzza (2014a), Béguinot (2002h, 2003a, 2006c, 2007a, 2012a), Bellman (2012a), Blackman & Eastop (2014), Buhr (1965a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Heie (1980a), Hellrigl (2004a), Houard (1908a, 1909a), Influential Points (2018), Kollár (2011a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Schneider (2004a), Lampel (1988a), Lampel & Meier (2003a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Osiadacz & Halaj (2014a), Pellizzari (2010a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Suay Cano & González Funes (1998c), Tomasi (2003a, 2014a).