Stenacis triradiata (Nalepa, 1892)

on Salix

Salix alba, Ooijpolder

Salix alba, Dronten; © Arnold Grosscurt

another specimen

Salix spec., Belgium, prov. Hainaut, Mouscron © Etienne Devos

Salix cinerea, Germany, Lohr am Main; © Arnold Grosscurt

almost a bud gall

Salix caprea, Belgium, Antwerp, Wilrijk © Chris Snyers

gall

Galls like these are commonly associated in the cecidological literature with Stenacis triradiata, albeit not without some hesitation, because generally several more gall mite species co-occur in the gall. Presently one supposes that a mycoplasma, rather than eriophids, is the primary causer (Pye, 2012a) of these galls, that often are addressed with the German word “Wirrzöpfe”.

host plants

Salicaceae, monophagous

Salix alba, aurita, babylonica, caprea, cinerea, x fragilis, glauca, phylicifolia, purpurea, repens & subp. rosmarinifolia, triandra

synonyms

Eriophyes triradiatus.

references

Belmann (2012a). Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Buhr (1965a), Cogolludo (1921a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Denizhan, Monfreda, de Lillo & Çobanoğlu (2015a), Farkas (1965a), C & M Gutue & Roşca (2012a), Hellrigl (2003a), Kollár (2007a, 2011a), Koops (2013a), Lambinon, Schneider & Feitz (2001a), de Lillo (1986a), Petanović & Stanković (1999a), Pye (2012a), Ripka (2007a, 2020a), Ripka & de Lillo (1997a), Roskam (2009a), Skoracka, Lewandowski & Boczek (2005a), Tomasi (2014a), Vaněčková-Skuhravá (1996a), Wahlgren (1963b), Weidner (1954a).