acari
animal
aphid
aphids
biology
chemical club
chemistry
control
disease
diseases
enemy
eriophyidae
frequently
gall
gall mites
green
heavily
infested
insect
insects
leaf
lice
louse
maple
maple tree
maple trees
mites
much
natural
nature
nature conservation
nodules
pest
pest control
pests
red
reddish
rural
sick
small
tiny