WebElongate hemlock scale (EHS) is native to Japan. It was first observed in Queens, NY in 1908. Today it is found in thirteen states, including New Hampshire. Like hemlock woolly … WebElongate hemlock scale. Fiorinia externa Ferris (Hemiptera: Diaspididae). Orientation to pest . Elongate hemlock scale, Fiorinia externa Ferris, an invasive scale in the USA, is native to Japan and China that is a pest of eastern hemlock (Tsuga canadensis [L.] Carrière) in the eastern United States. The scale has long-lived adult females that …
Scouting for Cryptomeria Scale NC State Extension
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Hemlock Woolly Adelgid & Elongate Hemlock Scale NH …
WebMay 20, 2024 · Elongate Hemlock Scale (Fiorinia externa) =(360-700 GDD = 1st generation crawlers): An armored scale found on the underside of hemlock foliage, and sometimes on spruce, Douglas fir and yew. Female covers are oval, flat, tan/translucent; males are whitish. There may be six or more scales per needle. Yellow spots appear on … WebElongate hemlock scale on hemlock ( left, middle ( adelgid circled)) and fir ( right ): Needle discoloration on hemlock (left) and fir (right): Note: other pathogens, pests and processes will cause needle yellowing. Look for … The elongate hemlock scale, sometimes known as the fiorinia scale, is a serious armored scale insect pest of hemlock, Tsuga spp., on ornamental and forest trees in Pennsylvania. The principal host plants include eastern hemlock, T. canadensis , Carolina hemlock, T. caroliniana , and northern … See more The waxy covers of this species can be observed on the lower needle surface as well as on new cones. The flattened, elongate, light yellow brown to brownish orange waxy cover of the adult female is about 1.5 mm long. … See more This species overwinters as fertilized females or eggs. In early spring the females deposit eggs beneath their waxy covers and may continue to lay eggs through early summer. One female may produce a total of 20 … See more Effective management of this key pest is extremely difficult since all stages of development may be present during the growing season. There is an abundance of crawlers from late May through early June. This is an ideal time … See more Scales injure host plants by inserting their threadlike, piercing-sucking mouthparts into needles and withdraw vital nutrients necessary for plant growth from mesophyll cells. Armored scale insects do not feed on the contents of … See more the grassten