Pulvinaria hydrangeae Steinweden, 1946
hydrangea scale
on trees, less often shrubs
Acer campestre, Hungary, Budapest, Hűvösvölgy, 9.viii.2019 © László Érsek
female with beginning ovisac
ovisacs
larvae
larva, dorsal view
Cornus sanguinea, Hungary, Mosonmagyaróvár, 22.vi.2020 © László Érsek
parasitised female
Acer campestre, Zeewolde, Harderbos, 7.vi.2018 © Hans Jonkman: female with ovisac
Tilia, females with ovisac (from van der Linden, 2007a)
parasite
Scales mainly at the underside of leaves. The ovisac, up to 10 mm in length, is formed in the months of June-August and is elongated with three clear furrows. Often a female drops off after the eggs have been deposited, leaving only the ovisac on the leaf. Univoltine; hibernation as larva on the young branches.
host plants
polyphagous
Acer campestre, monspessulanum, negundo, palmatum, platanoides, pseudoplatanus; Actinidia chinensis; Aesculus x carnea, hippocastanum, pavia; Amelanchier lamarckii; Aralia elata; Carpinus betulus; Castanea sativa; Catalpa bignonioides; Celastrus; Cornus mas, sanguinea; Corylus colurna; Diospyros kaki; Fagus sylvatica; Fraxinus excelsior; Hydrangea macrophylla; Lonicera; Magnolia; Malus floribunda; Morus; Phellodendron; Photinia bodinieri; Platanus; Populus; Prunus serrulata, x gondouinii; Pterocarya; Pyracantha coccinea; Pyrus calleryana; Quercus robur; Rhus typhina; Rosa rugosa; Salix caprea; Sorbus aria, aucuparia, intermedia; Styphnolobium japonicum; Taxus baccata; Tilia americana, cordata, x euchlora, x europaea, platyphyllos, tomentosa; Ulmus; Viburnum opulus; Zelkova serrata.
Preferably on Hydrangea.
distribution within Europe
synonyms
Eupulvinaria hydrangeae.
references
Boertjes, Fransen & Marissen (2003a), Gertsson (2016a), Hoffmann (2002a), Jansen (1999b, 2000a, 2013a), van der Linden (2007a), Malumphy (2010a), Masten Milek, Ivezić & Šimala (2009a), Salisbury & Malumphy (2017a), Schmutterer & Hoffmann (2003a), Schneider & Tanson (2003a), Seljak (2008a, 2010a).