Eriophyidae

Eriophyidae
	Eriophyes tiliae tiliae galls
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Arachnida
Subclass:	Acari
Order:	Trombidiformes
Superfamily:	Eriophyoidea
Family:	Eriophyidae; Nalepa, 1898
Diversity
	> 240 genera, > 3,500 species

Eriophyidae is a family of more than 200 genera of mites, which live as plant parasites, commonly causing galls or other damage to the plant tissues and hence known as gall mites. About 3,600 species have been described, but this is probably less than 10% of the actual number existing in this poorly researched family. They are microscopic mites and are yellow to pinkish white to purplish in color. The mites are worm like, and have only two pairs of legs. Their primary method of population spread is by wind. They affect a wide range of plants, and several are major pest species causing substantial economic damage to crops. Some species, however, are used as biological agents to control weeds and invasive plant species.

Notable species

Notable species in this family include:

Abacarus hystrix, the cereal rust mite
Abacarus sacchari, the sugarcane rust mite
Acalitus essigi, the redberry mite, which affects blackberries
Aceria chondrillae, the chondrilla gall mite, an agent of biological control against skeleton weed (Chondrilla juncea)
Aceria guerreronis, a mite of coconuts
Aceria malherbae, the bindweed gall mite, an agent of biological control against field bindweed (Convolvulus arvensis)
Eriophyes padi, a mite that causes cherry pouch galls on black cherry trees