Pemphigus passeki Börner, 1952
on Populus
gall
epiphyllous, fusiform swelling of the basal part of the midrib, thickest near the base, quickly narrowing towards the tip.
primary host plants
Salicaceae, narrowly monophagous
Populus nigra & var. italica.
gall
aphids at the roots.
secondary host plants
Apiaceae, monophagous
Carum carvi.
Perhaps sporadically also Aegopodium podagraria and Daucus carota (Börner & Heinze).
references
Blackman & Eastop (2014), Börner & Heinze (1957a), Buhr (1965a), Osiadacz & Halaj (2014a), Tomasi (2014a), Wojciechowski, Depa, Halgoš ao (2016a).