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.