Pemphigus phenax Börner & Blunck, 1916
on Populus
gall
epiphyllous, generally reddish, fusiform swelling of the central part of the midrib, over five times the normal thicknes; slit-like opening at the underside over the entire length of the gall.
primary hostplants
Salicaceae, monophagous
Populus nigra & var. italica.
on Daucus
gall
the apterae here are pale lemon yellow to yellowish white, with white wax; 1.5-2.5 mm.
secondary hostplants
Apiaceae, monophagous
Daucus carota & subsp. sativus
synonyms
Buhr describes this species under the name: “Pemphigus dauci Gour.”. This is erroneous: P. dauci (Goureau, 1867) is a synonym of Dysaphis crataegi.
references
Bellmann (2012a), Blackman & Eastop (2014), Buhr (1965a), Dauphin & Aniotsbehere (1997a), Heie (1980a), Krzywiec (1982a), Lampel & Meier (2003a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Osiadacz & Halaj (2014a), Petrović (1998a), Redfern & Shirley (2011a), Tambs-Lyche & Heie (1994a).