Acalitus calycophthirus (Nalepa, 1891)
on Betula

Betula sp., France, dépt. Ardennes, Gué d’Hossus, RN Trou Blanc © Stéphane Claerebout

Betula pendula, Enter; © Arnold Grosscurt

Betula pendula, Mierlo, Strabrechtse Heide: group of galled buds; © Arnold Grosscurt

Betula pendula, Amsterdamse Wateleidingduinen

transverse section

abundant mites between the still unfolded leaves
hostplants
Betulaceae,monophagous
Betula pendula, pubescens.
synonyms
Aceria calycopthira, Aceria rudis calycopthtira; Eriophyes calycophthirus.
inquilines
references
Bellmann (2012a), Buhr (1964b), Chinery (2011a), Coulianos & Holmåsen (1991a), Dauphin & Aniotsbehere (1997a), Ecott (2012a), Farkas (1965a), Fjelddalen (1995a), Groom (2011a), Hellrigl (2003a), Koops (2013a), Lambinon, Carbonnelle & Claerebout (2015a), Máca (2012a), Nalepa (1919a), Redfern & Shirley (2011a), Ripka (2007a), Roivainen (1947a), Roskam (2009a), Sylvén (1960a), Vaněčková-Skuhravá (1996a), Weidner (1954a).