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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.
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.
Eriophyes tiliae is a mite that forms the lime nail gall or bugle gall. [2] It develops in a chemically induced gall; an erect, oblique or curved distortion rising up from the upper surface of the leaves of the lime (linden) trees (genus Tilia), such as the large-leaved lime tree Tilia platyphyllos, the common lime tree Tilia × europaea, etc.
Eriophyes is a genus of mite that forms galls, mainly on the leaves of deciduous plants. Some are called blister mites. The blue butterfly Celastrina serotina has been reported to feed on these galls and also on the mites, making it one of the uncommon carnivorous Lepidoptera. [1] Whereas other mites have four paired legs, Eriophyes have only ...
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]
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.
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]
The adult mite lives on alder tree sap, sucked from the cell tissues. The galls cluster along the midrib in the angle of the veins. [4] [5] The wide opening and interior on the lower epidermis and is lined with large numbers of small hairs. Galls may be so numerous that the leaf expansion is inhibited. [3] [4] The gall on the lower epidermis.