Oystershell scale lepidosaphes ulmi was identified on waferash ptelea trifoliata. Mussel scale lepidosaphes ulmi is again increasing in importance in fruit growing. Under this covering is a saclike insect that lacks legs, eyes, and antennae. Lepidosaphes ulmi san jose scale damage quadraspidiotus pernicious. Several other scale insects including pear scale, oyster scale and nut scale also occur locally, mainly on cider apples which are infrequently sprayed with insecticides. As with this tree, heavily infested plants grow poorly and may suffer dieback of twigs and branches. Pdf timing observation and control of mussel scale. A list is given of characters distinguishing it from l. Taken together, these data suggest that several species may be masquerading under the label lepidosaphes ulmi. Lepidosaphes ulmi wikibooks, open books for an open world.
Back in 1972, garrett, working under john davidson, published a study he conducted on this scale on willow and poplars. Cryptolestes ferrugineus stephens insect dry spices, neither crushed nor ground, for consumption. What links here related changes upload file special pages permanent link page. Oystershell scale lepidosaphes ulmi university of idaho. Files are available under licenses specified on their description page. The timing and pattern of mussel scale lepidosaphes ulmi l. Mature females are the most commonly observed life stage, being found on branches. The small insects attach themselves to bark and cause injury by sucking the trees sap, this metabolic drain on the plant may kill a branch or the entire tree. The gray race attacks lilac, ash, willow, poplar, and maple, among others. Tijdens een in het zomerseizoen van 1971 ingesteld onderzoek werden vier soorten parasitaire hymenoptera uit kommaschildluizen gekweekt.
Minute paleyellow crawlers emerge 400500 gdd base 50 and attach. Insect identification laboratory annual report 2015 eric r. The adult insect is enclosed in a shell made up of its own shed skins and waxy secretions. Oystershell mussel scale lepidosaphes ulmi by jay b. Insect identification laboratory annual report 2015. Both male and female scales have an oystershape that curves to one side. Oystershell scales lepidosaphes ulmi are brown and shaped like an oyster shell about 18 long.
Oystershell scale lepidosaphes ulmi ongreen ash fraxinus pennsylvanicaesther buckseniori found a green ash tree fraxinus pennsylvanica outside the. Lepidosaphes ulmi, rhynchites hungaricus, malacosoma franconica. Biology and management of european earwig in orchards and. Azalea bark scale university of maryland extension. Lepidosaphes ulmi this is an armored scale and unlike the cottony maple and calico scales it does not produce honeydew. Firstinstar nymphs were the most abundant development stage in the middle of december, with 2ndinstar nymphs occurring from middecember and adults from january. Pdf control of diaspidid scales on olive trees by releasing. The oystershell or mussel scale lepidosaphes ulmi, l.
Many hosts are commonly attacked by oystershell scale, making this one of the most destructive insect pests of trees and shrubs. Pests are always lurking and waiting to take down your beloved trees. Under this covering is a saclike animal that is quite different in appearance from most insects. Oystershell scale is a member of the order homoptera, family diaspididae armored scales and genus lepidosaphes ulmi. Adults have a grey covering made out of casts skins and wax. They produce a waxy covering that are 18 long, brown to gray in color and resembles an oysters shell. Oystershell scale lepidosaphes ulmi on green ash fraxinus. At this time only the overwintering stage is present. Pdf timing observation and control of mussel scale lepidosaphes. Continuing to use this website means you agree to our use of cookies.
This species was monovoltine, with hibernation occurring in the egg stage. Apple oystersheil scale lepidosaphes malicola borkh hom. Oystershell scale in northern arizona above 6000 foot. Lepidosaphes beckii also known as purple scale, mussel scale, citrus mussel scale, orange scale, comma scale and mussel purple scale is a scale insect that is a pest of citrus trees.
We present a general timeline of european earwig life history in fig. Oystershell scale lepidosaphes ulmi attacks over trees and shrubs including lilac, beech, and viburnum. Mites associated with the oystershell scale lepidosaphes ulmi linne article pdf available in psyche a journal of entomology 194. Ang lepidosaphes ulmi sakop sa kahenera nga lepidosaphes sa kabanay nga diaspididae. Jul 01, 2019 the oystershell scale belongs to a group of insects called the armored scales. Oystershell scale ut extension university of tennessee. The small insects attach themselves to bark and cause injury by sucking the trees sap. Aspen, ash, cotoneaster, willow and lilac are among the most commonly damaged landscape plants. Includes free vocabulary trainer, verb tables and pronunciation function.
This armored scale feeds on a wide range of plant material including willow. The oystershell scale diaspididae lepidosaphes ulmi. A few provide secretions or other products that are beneficial and have commercial value. Females are larger, approximately 3 mm and more common than males. Jul 21, 2015 oystershell scale is a member of the order homoptera, family diaspididae armored scales and genus lepidosaphes ulmi. Even light infestations can cause severe economic loss due to a zero tolerance on fruits for export. In late spring gdd base 50350500, minute paleyellow. The adult insect is enclosed in a shell made up of its own shed skins and waxy secretions and resembles an oysters shell. Lepidosaphes ulmi also known as oystershell scale are scale insects that is a pest on woody plants. Field guide to common insect pests of urban trees in the northeast.
Through prevention, early detection, and treatment, insect pests wont get the upper hand. Although hall 1923 thought that newsteads material was never described and probably lost in a fire and borchsenius 1966 treated lepidosaphes bicolor as incertae sedis, williams 2002a found original slides in the bmnh and determined that mytilaspis lepidosaphes bicolor. Helsen and others published timing observation and control of mussel scale lepidosaphes ulmi find, read and cite all the. Oystershell scale in northern arizona above 6000 foot elevations. All structured data from the file and property namespaces is available under the creative commons cc0 license. There are many cultivars available with pink or white flower bract colors and. Oystershell scale in northern arizona above 6000 foot elevations az1248 revised 1014 the oystershell scale, lepidosaphes ulmi, is a common armored scale insect on a variety of plants in the higher elevations of northern arizona. Nov 28, 2015 this page was last edited on 14 september 2017, at 20. Strong arm these pests scott schell healthy trees are invaluable in wyoming, and keeping them that way requires constant vigilance.
There is only one generation per year for the gray race. Lepidosaphes ulmi and parlatoria oleae of olive trees as well as on their potential control with. Mussel scale has become an increasingly important and common pest of apple in recent years. The life cycle of lepidosaphes ulmi was studied in valdivia, chile, during 199092. The oystershell scale is a major pest of apple in north america, europe and australasia, but in the middle east it sometimes injures grapevines. Mar 03, 2015 taken together, these data suggest that several species may be masquerading under the label lepidosaphes ulmi. Lepidosaphes ulmi guide to nursery and landscape arthropod.
Dirimanov m, burov d, karov s, lecheva i, mitkov a, 1984. Oystershell scale csu extension colorado state university. Timing observation and control of mussel scale lepidosaphes ulmi. Documents about lepidosaphes ulmi lepsul this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. Pfeiffer theresa dellinger holly waterman department of entomology college of agriculture and life sciences virginia cooperative extension virginia polytechnic institute and state university. Oystershell mussel scale lepidosaphes ulmi digitalcommons. We do not use these to store personal information about you. Oystershell scale south dakota department of agriculture. Pagka karon wala pay siak nga nalista ubos niini niya.
Lepidosaphes ulmi lepsuldocuments eppo global database. Epas registered antimicrobial products for use against novel coronavirus sarscov2, the cause of covid19 author. Pdf page layout format, size, pages per sheet your files will konwertowani splitted during conversion. Scale insects unh extension university of new hampshire. Oorwormen forficula auricularia bleken soms als vrij belangrijke roofvjanden te kunnen optreden. Lepidosaphes ulmi also known as apple mussel scale or oystershell scale is a scale insect that. It develops on the bark of trunks and limbs of a wide range of. Ceviz hastalik ve zararlilari 3 o n s o z ulkemizde yetistirilen kultur bitkilerinde ekonomik olarak zarara neden olan toplam 506 hastal. The scale overwinters on twigs and branches as eggs under the females waxy scale cover, which closely resembles onehalf of an oyster shell. Protected pdf files will be unlocked automatically and the protection will be removed. The small insects attach themselves to leaves, fruits and small branches and cause injury by sucking the trees sap.
Lepidosaphes oleae balachowsky, 1954 lepidosaphes fici lindinger, 1954 mytilococcus oleae lupo, 1939 mytilococcus ulmi lindinger, 1936 mytilococcus saliceti lindinger, 1936 lepidosaphes linearis lindinger, 1936 coccus conchiformis ferris, 1936 lepidosaphes vulva nel, 1933 lepidosaphes pinniformis lindinger, 1912 lepidosaphes bicolor sanders. Its morphology, bionomics and control have been studied since 1963, both from the literature and from field observations. This page was last edited on 14 september 2017, at 20. The occurrence of the mussel scale mytilococcus lepidosaphes ulmi l. The oystershell scale, lepidosaphes ulmi, is the most damaging scale insect present in.
Cydia latiferreana walsingham insect fresh or dried, shelled and unshelled nuts for consumption cydia pomonella linnaeus insect fresh pear pyrus communis l. In late autumn, adults mate aboveground and then start a nesting phase. Look up the english to french translation of oystershell scale lepidosaphes ulmi syn mytilococcus ulmi in the pons online dictionary. Lepidosaphes ulmi oystershell scale identification. To file a complaint of discrimination, contact the. The oystershell scale belongs to a group of insects called the armored scales.
Although hall 1923 thought that newsteads material was never described and probably lost in a fire and borchsenius 1966 treated lepidosaphes bicolor as incertae sedis, williams 2002a found original slides in the bmnh and determined that mytilaspis lepidosaphes bicolor was a junior synonym of l. Espesye sa insekto nga una nga gihulagway ni linnaeus ni adtong 1758 ang lepidosaphes ulmi. The most abundant of these are tetranychus urticae, aphis species, aulacaspis rosae, lepidosaphes ulmi, rhynchites hungaricus, malacosoma franconica, m. Many species are plant feeders and cause injury to plants, including fruit trees and grain crops. Stanton gill marie rojas, ipm scout, noticed that a coral bark willow she was monitoring in a nursery was looking stunted. They resemble tiny sea shells with a mottled grey appearance fig.
Mites associated with the oystershell scale lepidosaphes. Mussel scale lepidosaphes ulmi linnaeus and other scale. She noted that most were hunkered down behind bud scales on the stem, although a few were out on the stems. Pojava zapetaste stitaste vasi mytilococcus lepidosaphes ulmi l.
Media in category lepidosaphes ulmithe following 3 files are in this category, out of 3 total. The oystershell scale diaspididae lepidosaphes ulmi fig. There are two races of oystershell scale, gray and brown. Homopterans exhibit considerable diversity in body size. Lepidosaphes ulmi also known as apple mussel scale or oystershell scale is a scale insect that is a pest of trees and woody plants. Oystershell scale lepidosaphes ulmi ongreen ash fraxinus pennsylvanica esther buckseniori found a green ash tree fraxinus pennsylvanica outside the. The scale overwinters on twigs and branches as eggs under the females waxy scale cover, which closely resembles onehalf of an oystershell fig. Some notes on the natural control of the oystershell scale. Bark become cracked and scaly, trees loose vigor, foliage is dwarfed and spotted. In early may, pale yellow crawlers emerge to feed causing yellowing, stunted. The specific name beckii is in honour of historian richard beck. Scale insects feeding on plant sap slowly reduce plant vigor, so i think this sample may have been shorter due to the infestation of scale insects. Quality of images the lower the quality, the smaller is the file size. Additionally, a password can be set to prevent opening of the pdf file by everyone.