Oak leaf Phylloxera

The oak leaf phylloxera (Phylloxera quercus) is an orange-coloured aphid that attacks just trees and shrubs of genus Quercus, mostly oaks, but also the perennial holm oak and kermes oak. Actually, this is not just one species, but several: Phylloxera quercus, P.quercina, P.coccinea and P.glabra, and perhaps some more amongst the ones that are described … Read more