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Tree service for Pine tree diseases in Mesa Az.
Pine Needle Scale
Heavy infestation of pine needle scale (Hemiptera) on mugo pine (Pinus mugo)
Pine needle scale, Chionaspis pinifoliae, is a common insect pest of pines in Missouri. It is most frequently found on Mugo, Scotch (Scots), and Ponderosa pine but will also infest Austrian, red, or white pine and most spruces. Light infestations often go unnoticed and cause little damage. As the population increases, needles become covered with the white scale insects, which suck juices from the needles. A heavy infestation can cause whole branches to die, or in severe cases, kill the plants.
Symptoms and Diagnosis
The scales are whitish and only 1/10 of an inch long with a yellow spot at one end. As numbers increase, the whole needle may be covered with scale. When pried off, the scales are hollow, and depending on the time of year, they may contain eggs or feeding insects.
Reddish-colored eggs overwinter beneath the female scales. In May to June, young, called nymphs hatch and the migrate to new locations by crawling or being blown by the wind. The nymphs settle, begin feeding, and produce a waxy, scale covering. During late July and early August, mating takes place, and eggs are laid under the scale for next year's generation. (In some locations, a second generation may occur in early fall.)
White flecks are pine needle scale (Hemiptera) on this Austrian pine (Pinus nigra); banding on the needles and tip dieback is caused by dothistroma bligh
Pine needle scale (Hemiptera) on Austrian pine (Pinus nigra)
Close-up of pine needle scale (Hemiptera) on Austrian pine (Pinus nigra)
I hope you found this page about Pine Needle Scale useful. If you have any questions about Tree Disease please contact our Tree Service to schedule an appointment. We have been treating sick trees for over 50 years. We currently serve, Mesa AZ, Gilbert AZ, Chandler AZ, Scottsdale, Phoenix AZ and all of Maricopa County AZ.
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