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Aceria ilicis causes felt-like galls (erinea), which are a patch of glandular hairs, caused by gall mites of the family Eriophyoidea. The bulge is 2–3 mm high on the upperside of the leaf of holm oak (also known as evergreen oak) and the depression below is several mm wide; there are usually several on a leaf.
Aceria baccharices, also known as the mulefat leaf-blister mite and formerly known as Eriophyes baccharices, is a species of arachnid native to North America that induces galls on two California willows, Baccharis salicifolia and Baccharis glutinosa. [1] [2] This mite was first described to science by Hartford H. Keifer in 1945. [3]
Aceria brachytarsus, formerly Eriophyes brachytarsus, also known as the pouch gall mite or the walnut purse gall mite, is an eriophyoid mite that produces leaf-pouch galls on various species of walnut trees including Juglans californica. [1] The gall produced by this mite initially looks like a bladder gall. [2]
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.
Paratarsotomus macropalpis is a species of mite belonging to the family Erythracaridae. [2] The mite is endemic to Southern California and is usually observed darting amongst sidewalks and in rocky areas. [3] Earlier classified as belonging to genus Tarsotomus, it was reclassified in 1999, along with four other species, to genus Paratarsotomus. [4]
Aceria is a genus of mites belonging to the family Eriophyidae, the gall mites.These tiny animals are parasites of plants.Several species can cause blistering and galls, including erineum galls. [1]
Aceria mackiei, previously Eriophyes mackiei, the live oak erineum mite, is an abundant eriophyoid mite that produces leaf-blister galls on coast live oak, interior live oak, huckleberry oak, and canyon live oak. [1] This mite's ability to induce galls in oaks of both the black oak group and the intermediate oak group is unique. [1]
The mite usually attacks the flower clusters soon after they open. The individual gall is no more than 2 cm across but when grouped together can be impressive as they present a sizable irregular deformity formed from the fused and swollen flower stalks . [5] The gall has also been found on buds, leaf stalks, twigs or trunks.