Aceria campestricola (Frauenfeld, 1865)
on Ulmus
Ulmus x hollandica, Biddinghuizen, Spijk- en Bremerbergbos © Hans Jonkman: exceptionally strong infestation
Ulmus x hollandica, Diemen, park Spoorzicht: upperside
underside
detail
Ulmus minor, Duin en Kruisberg: opened gall
Ulmus laevis, Belgium, prov. Namur, Villers-sur-Lesse; © Jean-Yves Baugnée
detail
Ulmus spec., Hungary, Mosonmagyaróvár, 4.v.2917 © László Érsek
this gall with trichomes seems to form a third type
underside of the gall
transverse section
older galls, 6.vii.2917
detail
underside of the gall
transverse section
host plants
Ulmaceae, monophagous
Ulmus glabra, x hollandica, laevis, minor.
notes
The gall occurs in at least two forms: as tiny, low pimples, and as somewhat larger, clearly stalked, dimples (lower two pictures). The first form has been described as Aceria ulmicola, the second as Aceria brevipunctata.
synonyms
Aceria brevipunctata, Aculus brevipunctatus (Nalepa, 1889); A. ulmi Nalepa 1890 nec (Garman, 1883); A. ulmicola Nalepa, 1909; Eriophyes ulmi.
This synonymy, based on the Fauna Europaea (2014), is controversial. Skoracka ao (2005a) recognise two species: campestricola (= ulmicola) and brevipuncta.
references
Béguinot (2002a,d, 2003a, 2006b,c, 2007b, 2012a), Bellmann (2012a), Blanes-Dalmau, Caballero-López & Pujade-Villar (2017a), Buhr (1965a), Chinery (2011a), Cogolludo (1921a), Dauphin & Aniotsbehere (1997a), Deckert & Deckert (2016a), Denizhan, Monfreda, de Lillo &a Çobanoglu (2015a), Farkas (1965a), Groom (2011a), Hellrigl (2003a, 2004b), Houard (1908a), Koops (2013a), Lambinon, Schneider & Feitz (2001a, 2012a), Máca (2012a), Petanović & Stanković (1999a), Redfern & Shirley (2011a), Ripka (2007a, 2020a), Ripka & de Lillo (1997a), Roskam (2009a), Skoracka, Lewandowski & Boczek (2005a), Stănescu (2009a), Tavares (1905a), Tomasi (2003a, 2014a), Vaněčková-Skuhravá (1996a).