Eriophyes calycobius (Nalepa, 1891)
on ? Amelanchier, Crataegus
gall
the buds remain closed; they are somewhat swollen and often unusually hairy.
hostplants
Rosaceae, ? monophagous
Crataegus laevigata, monogyna.
According to Cogollugo and Houard also Amelanchier ovalis.
Last modified 27.ii.2020