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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.
The leaf is distorted and crumpled with folds, and is covered with reddish hairs. The reddish tinge resembles an emerging leaf, which together with the small size makes the gall easy to overlook. The mites live and feed among the hairs which are deep in the folds of the leaf and overwinter under the bud scales. [2] [3]
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 ...
Cecidophyopsis ribis is an eriophyid mite which is best known for being a plant parasite, a pest of Ribes species, the genus that includes gooseberries and blackcurrants. It is commonly known as the blackcurrant gall mite or big bud mite. It feeds on the plants' buds, forming galls, and transmits a virus which causes blackcurrant reversion ...
Mites form numerous capsule galls, greenish-yellow in color, between leaf veins of Ash trees in the genus Fraxinus, including Fraxinus americana, Fraxinus latifolia, Fraxinus nigra, and Fraxinus pennsylvanica. [3] [4] The mites stay in the galls until late summer when host leaves mature. [5]: 50 The life cycle is a form of alternation of ...
Aceria fraxiniflora, the ash flower gall mite, is a species of gall mite that produces galls on ash trees. [1] The male flowers of ash are greatly distorted by the mites, which results in a highly disfigured and disorganized gall that remains yellow or green, and later dries and turns brown.
Dermanyssus gallinae (also known as the red mite) is a haematophagous ectoparasite of poultry.It has been implicated as a vector of several major pathogenic diseases. [1] [2] Despite its common names, it has a wide range of hosts including several species of wild birds and mammals, including humans, where the condition it causes is called gamasoidosis.