Eriophyes canestrinii (Nalepa, 1891)
on Buxus

Buxus sempervirens, Denmark © Simon Haarder

part of a galled bud scale
gall
mites develop in and on the developing leaf and flower buds, that become strongly hypertrophied. The unfolded leaves are strongly disfigured. Gall not hairy.
hostplants
Buxaceae, monophagous
Buxus sempervirens.
synonyms
based on the variability within British material of this species, Pye & Ostojá-Starzewski conclude that the subspecies E. c. hypophyllus may not be justified; contrariwise, the Fauna Europaea (2014) consider hypopyllus a valid species. The two pictures above fully match with the description given of hypopyllus by Farkas.
references
Buhr (1964b), Dauphin & Aniotsbehere (1997a), Farkas (1965a), Hellrigl (2003a), Houard (1909a), Ilie & Marinescu (2011a), Petanović (1998a), Navia, Ochoa, Welbourn ao (2010a), Pye & Ostojá-Starzewski (2009a), Redfern & Shirley (2011a), Ripka (2007a), Skoracka, Lewandowski & Boczek (2005a), Tomasi (2014a).