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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 ...
Hundreds of thousands of the tiny wind-soaring and itch-inducing critters can fall from trees every day and are packed with a venom that can paralyze prey 166,000 times their size.
Cystotheca lanestris, the live oak witch's broom fungus, is a species of mildew that infects buds and induces stem galls called witch's brooms on oak trees in California, Arizona, and Mexico in North America. [2] [3] Witch's brooms are "abnormal clusters of shoots that are thickened, elongated, and highly branched."
Oak wilt is a devastating exotic disease, killing some trees rapidly in a single season. [7] Oak wilt is an important disease in urban areas where trees are highly valued. . The disease reduces property values because of the loss of trees and is economically costly to the property owner since they or the local government must pay for tree remo
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]
Cronartium quercuum, also known as pine-oak gall rust is a fungal disease of pine (Pinus spp.) and oak (Quercus spp.) trees. Similar to pine-pine gall rust , this disease is found on pine trees but its second host is an oak tree rather than another pine.
Agrilus biguttatus prefers to reside in old oak trees of 30-40 cm in diameter [6] with an inner bark thickness of 10-13 mm. [9] While healthy trees can generally resist A. biguttatus infestations, female beetles tend to live in trees that are physiologically stressed, often as a result of drought conditions.
Others that Rushing said should go into the invasive list would be Virginia Creeper, Poison Ivy, Artemisia, Tallow Trees and Willow Trees. Ross Reily can be reached by email at rreily@gannett.com ...