Aceria myriadeum (Murray, 1877)
Acer campestre, Ooij
Acer campestre, Hungary, Mosonmagyaróvár © László Érsek
galls in detail
underside of a group of galls
some galls that have developed at the underside of the leaf
Acer campestre, Schoonoord, Kibbelveen: exceptionally heavy infestation © Arnold Grosscurt
Acer campestre, Luxemburg, Ahn, Palmberg
Acer campestre, Rijckholt, Savelsbosch; contrary to the previous, these galls were in deep shade
left: many of the gall have lost their tip; right: the gall have an underside opening, protected by hairs:
these hairs are scabrous
Acer campestre, Frankce, Rhône-Alpes, Savoie, St. Pierre d’Entremont: underside of an infested leaf © Arnold Grosscurt
Sapindaceae, narrowly monophagous
Aceria, Artacris, aceriscampestris; Aceria heteronyx f aceris campestris; Acera macrorhyncha cephalonea f aceris campestris; Aculodes cephaloneus f. aceriscampestris (Nalepa, 1922).
The synonymuymy is far from clear: (PESI, 2019) does mention Eriophyes aceriscampestris Nalepa, 1922 twice, once as a valid species in Aceria, the other time as a junior synonym of Aceria myriadeum.
It is surprising that this species, a common one in NW Europe, seems to be absent from well investigated Poland, as it is not mentioned in the catalogue of Skoracka, Lewandowski & Boczek (2005a).
Béguinot (2002a,d,e,f,h, 2003a, 2005a, 2006c, 2007b, 2012a), Buhr (1964b), Coulianos & Holmåsen (1991a), Coulianos & Karlsson (2014a), Dauphin & Aniotsbehere (1997a), Groom (2011a), Hellrigl (2010a), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Lambinon & Romain (2009a), Lambinon, Schneider & Feitz (2001a), Lehmann & Flügel (2012a), Lehmann & Hannnover (2016a), Redfern & Shirley (2011a), Ripka (2007a), Roskam (2009a, 2019a), Weidner (1954a).