Plant Parasites of Europe

leafminers, galls and fungi

Phylloxera glabra

Phylloxera glabra (von Heyden, 1837)

oak-leaf phylloxera

on Quercus

Phylloxera glabra on Quercus robur

Quercus robur, Hungary, Budapest, 30.iv.2016 © László Érsek: leaf with ear galls

Phylloxera glabra on Quercus robur

detail

Phylloxera glabra on Quercus robur

underside of an ear gall

Phylloxera glabra on Quercus robur

female aphid

Phylloxera glabra on Quercus robur

female surrounded by a double row of eggs

Phylloxera glabra on Quercus robur

eggs, detail

Phylloxera glabra on Quercus robur

30.v.2016 a moth later

Phylloxera glabra on Quercus robur

the leaf clearly becomes mottled

Phylloxera glabra on Quercus robur

female aphid

gall

tiny (< 1 mm) orange-yellow aphids on the underside of a leaf. The aphids of the early spring generation cause “ear galls”. Later generations do not cause any galling, but their suction activities create numerous small yellow spots.The females deposit large numbers of shining yellow eggs in a concentric circle.

host plants

Fagaceae, narrowly oligophagous

Quercus robur.

Rarely also other deciduous oaks.

notes

for the difference with Ph. coccinea check there.

references

Barson & Carter (1972a), Blackman & Eastop (2014), Börner (1957a), Burton, Ellis & Schneider (2022a), Coulianos & Holmåsen (1991a), Hellrigl (2004a), Krzywiec (1982a), Lambinon & Schneider (2004a), Lampel & Meier (2003a), Lubiarz (0000a), Osiadacz & Wojciechowski (2008a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Roskam (2009a), Wojciechowski, Depa, Halgoš ao (2016a).

Last modified 21.vi.2022