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Aceria Keifer, 1944
This large genus of gall mites contains around 1000 species, several of which are economical pests like the wheat curl mite (Aceria tosichella) or the coconut mite (Aceria guerreronis). Many species are specialists on a small group of host plants. The hosts are mainly dicots, few are monocots and no conifer hosts are known.
The mites feed on the surface of leaves, inflorescences and fruits. The feeding activity induces the formation of tumour-like galls or scarring of the fruit surface like in the case of coconuts. Several species are important as vectors of plant viruses like Aceria tosichella or A. cajani.
For the beneficial species from this genus see Aceria (weed bioagents).
Currently, the following species have been entered into the system: