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Pyemotes herfsi, also known as the oak leaf gall mite or itch mite, is an ectoparasitic mite identified in Europe and subsequently found in India, Asia, and the United States. The mite parasitizes a variety of insect hosts and bites humans, causing red, itchy, and painful wheals (welts). The mites are barely visible, measuring about 0.2–0.8 ...
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]
How to prevent oak leaf itch mite bites PennState Extension says that eradicating the mites is difficult, as tree sprays usually don't seep into the galls where the mites hide out.
Edmond Zaborski, a research scientist with the Illinois Natural History Survey, then discovered that the skin conditions had resulted from oak leaf gall mite ("itch mite") (Pyemotes herfsi) bites. Zaborski further found that the mites were ectoparasites whose numbers had increased while feeding on the brood's eggs. [9]
The microscopic mite Lorryia formosa (). The mites are not a defined taxon, but is used for two distinct groups of arachnids, the Acariformes and the Parasitiformes.The phylogeny of the Acari has been relatively little studied, but molecular information from ribosomal DNA is being extensively used to understand relationships between groups.
Oligonychus araneum (grasswebbing mite) [5] Oligonychus bicolor (oak red mite), on oaks and other hardwood trees [6] Oligonychus biharensis (cassava red mite), many cultivated fruits and ornamental plants [1] Oligonychus coffeae (tea red spider mite), "considered to be the most serious pest of tea". [7]
Yep, both of these little biters are actually mites, which makes them arachnids, not insects. That means they are more closely related to ticks than other biting insects like mosquitoes.
They can be caused by various parasites, from viruses, fungi and bacteria, to other plants, insects and mites. Plant galls are often highly organized structures so that the cause of the gall can often be determined without the actual agent being identified. This applies particularly to insect and mite plant galls.