Plant Parasites of Europe

leafminers, galls and fungi

Pulvinaria regalis

Pulvinaria regalis Canard, 1968

horse-chestnut scale

on trees (shrubs)

Pulvinaria regalis: ovigerous females

UK, Berks © Malcolm Storey, Bioimages: females with ovisac

Pulvinaria regalis on Tilia cordata

Tilia cordata, Sweden (from Gertsson, 2011a)


The ovisac, that is produce in May-June, is for the greatest part covered by the body of the female. The young larvae live at the underside of the leaves, but soon migrate to the bark of the stem and thick branches. There also, as 3rd, final, instar larvae, they hibernate and mature in early spring.

host plants


Acer campestre, negundo, palmatum, platanoides, pseudoplatanus, rubrum; Aesculus hippocastanum, pavia; Alnus glutinosa; Amelanchier; Cornus capitata, sanguinea; Corylus avellanal Crataegus; Euonymus japonicus; Fagus sylvatica; Hedera helix; Hydrangea; Ilex aquifolium; Koelreuteria paniculata;Laurus nobilis; Magnolia kobus; Malus; Morus; Platanus hispanica; Populus; Prunus avium; Robinia pseudoacacia; Rhus; Salix; Skimmia japonica; Sophora; Tilia cordata, x europaea, platyphyllos, tomentosa; Ulmus glabra, minor, procera; Viburnum; Zelkova serrata.

distribution within Europe

(PESI, 2018).


Mainly in urban areas.


Egerström (2013a), Gertsson (2011a, 2016a), Hippe & Frey (1999a), Hoffmann (2002a), Jansen (1999b, 2000a), Köhler (2009b), Kozár, Guignard, Bachmann ao (1994a), Łagowska, Golan & Michalski (2018a), van der Linden (2007a), Malumphy (2010a), Malumphy & Badmin (2012a), O’Connor, Gertsson & Malumphy (2013a), Salisbury & Malumphy (2017a), Schmutterer & Hoffmann (2003a), Schneider & Tanson (2003a).

Last modified 23.i.2024