Elongate Hemlock Scale Fiorinia externa Ferris State level report County level observation Date created: 30 July 2019 Photo Credit: Kristopher Abell, University of Massachusetts, Bugwood.org The Alien Forest Pest Explorer maintains spatial and biological information for … — The elongate hemlock scale is an armored scale that can be a serious pest of hemlock (Tsuga spp.). It may infest its namesake host as well as on other conifers including firs, Douglas-fir, spruces, cedars, pines, and yews. Native to Japan, Elongate hemlock scale (EHS) is an armored scale insect targeting eastern and Carolina hemlocks. The flattened, elongate, light yellow brown to brownish orange waxy cover of the adult female is about 1.5 mm long. The Elongate Hemlock Scale is a serious armored scale pest of the Hemlock. 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. Entomosporium leaf spot . This non-native armored scale has a wide conifer host range beyond hemlocks. This pest is believed to be introduced from Japan and was first found in New York in 1908. 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 Newyork. Elongate hemlock scale is becoming a serious pest of hemlocks trees in the Greater Boston area. The elongate hemlock scale (Fiorinia externa), is an introduced pest from Asia. In western North Carolina, hemlocks and true firs including Fraser fir are its most common hosts. It is currently established in the Eastern United States. State List - This map identifies those states that list this species on their invasive species list or law. Be sure the product you select is labeled for treating adelgids. The non-native Elongate Hemlock Scale (Fiorinia externa), which is sometimes called "Fiornia scale," occurs on the underside of needles and on cones. Entomosporium mespili / Photinia, Raphiolepis . It has been found in the District of Co- Phoradendron sp. It is currently established in the Eastern United States. American mistletoe . In northern regions, the elongate hemlock scale completes one generation per year; however, two generations per year occur in southern regions. Though commonly associated with hemlocks, EHS can feed on many species of conifers including firs, pines, spruces, cedars, and Douglas fir. Elongate hemlock scales drive their fine, piercing-sucking mouthparts into needles to feed on sap from inner leaf tissue. The waxy covers of this species can be observed on the lower needle surface as well as on new cones. Questions and/or comments to the Bugwood Webmaster, Nonnative Invasive Species in Southern Forest and Grassland Ecosystems, West Virginia Invasive Species Strategic Plan and Volunteer Guidelines 2014, Common Names of Insects and Related Organisms, Center for Invasive Species and Ecosystem Health, USDA Animal and Plant Health Inspection Service, USDA National Institute of Food and Agriculture. They crawl to new spots on leaves and begin sucking plant sap and producing their own covers. “Alien Forest Pest Explorer - species map.” Database last updated 30 July 2019. Elongate hemlock scale (EHS) is primarily found infesting eastern hemlock (Tsuga canadensis) and Carolina hemlock (Tsuga caroliniana), along with fir and spruce in Massachusetts. This insect was first documented in the United States in 1908 in Queens, NY, and has since spread throughout most of the eastern United States. Elongate hemlock scale (Fiorinia externa) has never been found in the environment of California and would likely have significant economic and environmental impacts if … Elongate hemlock scale, Fiorinia externaFerris (Hemiptera: Diaspididae), is an armored scale insect native to Japan and eastern Asia (Murakami 1970). Do not toss trees and greenery into backyard woods or your compost pile. It is shiny black, and there is one red spot on each elytron.The remainder of the body is black as well, but the abdomen is either yellow or red. The first choice to make is whether to use a systemic or non-systemic type of treatment, and there are quite a few products to choose from in each category. Adult females are almost always immobile (apart from mealybugs) and permanently attached to the plant on which they are feeding. It has been intercepted in Minnesota on holiday greenery in 2018 and 2019 but is not established in Minnesota. American mistletoe. This means that young scale insects, called “crawlers”, begin to hatch from eggs in May. ... Elongate Hemlock Scale. Elongate Hemlock Scale US Forest Service Pub NA-PR-01-02 The elongate hemlock scale, Fiorinia externa Ferris, native to Japan, is a pest of eastern hemlock, Tsuga canadensis, and Carolina hemlock, T. caroliniana , in the Eastern United States. Chinese Hemloc... Hophornbeam, American. Elongate Hemlock Scale less preferred host plants, if infested, are usually growing adjacent to infested hemlocks. Fiorinia externa - Hemlock is host. They have piercing/sucking mouthparts they insert into the host plant for feeding. Items such as nursery stock, Christmas trees, and other holiday greenery entering Minnesota from areas with elongate hemlock scale are inspected to prevent the sale of infested material. Scale insects vary dramatically in appearance, from very small organisms (1–2 mm) that grow beneath wax covers (some shaped like oysters, others like mussel shells), to shiny pearl-like objects (about 5 mm), to animals covered with mealy wax. Emerald Ash Borer. Scientific Name: Fiorinia externa Common Name(s): Elongate Hemlock scale, EHS, Hemlock scale, Fiorinia Scale INVASIVE to MAINE Research Summary: Priyanka M. and Benjamin S. In the United States, this pest is established in the Atlantic States and sometimes occurs alongside two other exotic pests - a circular hemlock scale (Nuculaspis tsugae) and the hemlock woolly adelgid (Adelges tsugae). Elongate hemlock scale may also be observed on cedar, Douglas-fir, pine, and yew, which tend to grow adjacent to infested hemlocks. There are a multitude of scale insects that will infest conifers, many of which look very similar. 625 Robert Street North Phoradendron sp. Elongate Hemlock Scale overwinter as adult females. These Scales also infest Fir, Spruce and Yews, but these plants tend to be only secondary hosts. In Maryland, this scale insect has two generations each year. Males and females look quite different because the males have wings. Ambrosia Beetle Various Various . It is also found on hemlock needles. Aphids ... Elongate Hemlock Scale . Toll Free: 800-967-2474 Several other conifers are secondary hosts, although these are usually infested only in the presence of heavy scale populations on primary hosts. Quick Tips (PDF | 300 KB) Alternate name: Fiorinia scale, Abbreviated Name: EHS Hosts: Hemlock and fir are primary hosts.Spruce is also a common host. Elongate hemlock scale outbreaks may increase after a tree has been infested with hemlock woolly adelgid, drought, or other stresses. Elongate hemlock scale is an armored scale, non-native to the United States and first observed in New York in 1908. For these reasons, the MDA takes steps to prevent the movement of this insect into the state. It feeds on a wide variety of conifers besides hemlock, including fir and spruce. As the insects feed, t… Elongated hemlock scale is not known to occur in Minnesota at this time and is considered a potential plant pest. ■ Systemic materials are absorbed by the tree and transported upward into the plant where they are ingested by the target pest. For more information, visit Invasive.org, Last updated October 2018 / Privacy
Map courtesy: USDA Forest Service, Northern Research Station and Forest Health Protection. Ash . Diagnostic Walk-About observed Elongate Hemlock Scale (EHS) on its namesake host. This invasi… Adult male scales only have one pair o… Saint Paul, MN 55155-2538, Phone: 651-201-6000 Fiorinia externa . Scales are very small insects that secrete a waxy coating for defense and feed on the sap from plants. Elongate hemlock scale causes injury by withdrawing nutrients from a layer of tissue in needles called the mesophyll, and does not targetvascular tissues like many other piercing/sucking insects. Crawlers are the only part of the life cycle that are capable of dispersing and establishing new populations, and this usually occurs via birds or the wind. Hosts, although these are usually infested only in the presence of heavy scale populations on primary.! First observed in New York in 1908 found adjacent to infested hemlocks be sure the you... 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