Chionaspis salicis (Linnaeus, 1758)

willow scale

on woody plants

Chionaspis salicis: females on Cornus spec.

Cornus spec. © JA Davidson, Univ. Md, College Pk, Bugwood.org

gall

The female insects form a ± 3 mm long, oval brown scale; at their rear end a many times longer white ovisac is formed. When the infestation is heavy the shoots get a knobby, irregular shape.

hostplants

polyphagous on woody plants

Acer campestre, pseudoplatanus; Alnus glutinosa, incana, viridis; Andromeda polifolia; Betula; Chamaedaphne calyculata; Colutea arborescens; Cornus; Crataegus; Cytisus scoparius; Erica carnea; Euonymus eropaeus; Frangula alnus; Fraxinus excelsior; Hippophae rhamnoides; Laburnum anagyroides; Ligustrum; Loranthus europaeus; Malus pumila; Paeonia; Populus alba, nigra, tremula; Prunus laurocerasus; Pyrus communis; Quercus petraea; Rhamnus alpina subsp. fallax; Ribes; Rosa canina, villosa; Salix caprea, viminalis; Sorbus domestica; Syringa vulgaris; Tamarix gallica; Tilia cordata; Ulmus; Vaccinium myrtillus; Viburnum lantana, opulus; Viscum; Vitis vinifera.

synonyms

Chionaspis alni Signoret, 1869.

references

Blay Goicoechea (1992a), Bugila (2006a), Buhr (1964b), Dauphin & Aniotsbehere (1997a), Gertsson (2016a), Gomez-Menor Ortega (1957a), Hellrigl (2004a, 2006b), Houard (1908a), Jansen (1999b), Kozár, Guignard, Bachmann ao (1994a) , Malumphy (2010a), Malumphy & Ostrauskas (2009a), Malumphy, Ostrauskas & Pye (2008a, 2010a), Mifsud, Mazzeo, Russo & Watson (2014a), Podsiadło (2006a), Redfern & Shirley (2011a), Roskam (2009a), Schmutterer & Hoffmann (2003a), Seljak (2010a), Tomasi (2012a, 2014a).

mod 10.i.2019