Many species are plant feeders and cause injury to plants, including fruit trees and grain crops. This page was last edited on 14 september 2017, at 20. They resemble tiny sea shells with a mottled grey appearance fig. This armor, produced by a waxy secretion combined with the insects own body cast during each molt, helps protect the oystershell scale from natural predators. 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 northern research station of the usda forest service.
Oystershell scales are so named because their shape resembles small oysters. Lepidosaphes ulmi wikibooks, open books for an open world. Factors such as changes in soil and climatic conditions, insect and fungal attacks, etc. Twospotted spider mite oak mite damage aphids piercing mouthparts honeydew reduce vigor many different species and hosts tended by ants aphids life stages note tail pipes distortion of birch leaf aphids monitor for distorted foliage monitor for honeydew, sooty mold monitor for natural enemies. Upon closer examination, these branches are likely to be covered with small bumps that are actually scale insects.
This is a list of 159 species in the genus lepidosaphes lepidosaphes species. Pdf timing observation and control of mussel scale. We do not use these to store personal information about you. Oystershell scale in northern arizona above 6000 foot. Symptoms as the scales suck sap from the tree, the bark cracks and the leaves of the tree show significant change. Hosts ash fraxinus, cotoneaster rosaceae, dogwood cornus, lilac syringa, poplar populus, green ash fraxinus pennsylvanica and willow salix are hosts, although it is a common insect pest of many plants.
Aphytis mytilaspidis le baron diaspidiotus caucasicus borchs aulacaspis rosae bche. The trophic relationship of afelinides hymenoptera, aphelinidae in azerbaijan 5 1 2 22. Its favourite foodplant is the apple, but many other species are utilised, quaintance and sasscer. It is nearly worldwide in distribution as a pest of cultivated fruiis aud nursery stock, and has been largely disseminated through the agency of man. In its area of origin, the pest is under control due to parasitoid activity. Oystershell scale lepidosaphes ulmi oystershell scale overwinter as white eggs protected beneath the waxy covering of the adult female scale. Catalogue of the exotic armoured scale insects hemiptera. Mites associated with the oystershell scale lepidosaphes. Bygl newsletter this is the 19th 2012 edition of the buckeye yard and garden line bygl. Espesye sa insekto nga una nga gihulagway ni linnaeus ni adtong 1758 ang lepidosaphes ulmi. However, certain scales that overwinter as eggs such as oystershell scale lepidosaphes ulmi and pine needle scale chionaspis pinifoliae are more tolerant of dormant oil applications because the eggs are generally stacked or piled on top of each other. Adult female covers are approximately 3 mm long, convex, oystershellshaped and gray to brown. 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. Lepidosaphes pallida is recorded in new zealand for the first time.
Timing observation and control of mussel scale lepidosaphes ulmi article pdf available in acta horticulturae 19422 january 1995 with 90 reads how we measure reads. As with this tree, heavily infested plants grow poorly and may suffer dieback of twigs and branches. Stanton gill marie rojas, ipm scout, noticed that a coral bark willow she was monitoring in a nursery was looking stunted. Pagka karon wala pay siak nga nalista ubos niini niya. Control of scale insects and mealybugs on ornamentals. Lepidosaphes ulmi, pine needle scale hionaspis pinifoliae, pine scale. Continuing to use this website means you agree to our use of cookies. Euonymus scale is similar in size to jms but inhabit foliar surfaces and mature females have a dark brown cover. Download fulltext pdf mites associated with the oystershell scale lepidosaphes ulmi linne article pdf available in psyche a journal of entomology 194.
Lepidosaphes ulmi lepsuldocuments eppo global database. The oystershell scale diaspididae lepidosaphes ulmi fig. She noted that most were hunkered down behind bud scales on the stem, although a few were out on the stems. Documents about lepidosaphes ulmi lepsul this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. Agronomijos studiju programos magistro baigiamasis darbas vadovas doc.
Mussel scale has become an increasingly important and common pest. Ash, beech, birch, boxwood, cotoneaster, elm, fruit trees, lilac, maple, poplar, willow, and approximately 20 other species description. Lepidosaphes ussuriensis, an eastern palaearctic species, is a polyphagous pest damaging many woody plants in russia, northern china, japan, south korea and pakistan ben. Alien forest pest explorer northern research station. Lepidosaphes ulmi linnaeus state level report county level observation date created. Subsequently, dormant oils may not penetrate and contact the bottom layer. Lepidosaphes ulmi this is an armored scale and unlike the cottony maple and calico scales it does not produce honeydew.
Lepidosaphes ulmi also known as oystershell scale are scale insects that is a pest on woody plants. Ash trees belong to the genus of flowering plants called fraxinus. Oystershell scale lepidosaphes ulmi order hemiptera, family diaspididae. Ang lepidosaphes ulmi sakop sa kahenera nga lepidosaphes sa kabanay nga diaspididae. Even light infestations can cause severe economic loss due to a zero tolerance on fruits for export. A few provide secretions or other products that are beneficial and have commercial value. Lilac, birch, dogwood, ash, elm, poplar, soft maple, privet, willow, walnut, hemlock may and july eggs san jose scale quadraspidiatus perniciousus. Development and growth of exochomus quadripustulatus. Aspidiotus destructor is a wellknown pest of several tropical crops, mainly coconuts and bananas, and is present in most tropical countries. The crawlers hatch in the spring and then move a small distance from their mother before settling on the bark to feed live and dead crawlers and adult scale are circled above. Out of 100 scales counted february 7, 1911, sixtyfive showed indications of mite work.
A market analysis about agriculture and animal husbandry in china, written by foreign agricultural service. Homopterans exhibit considerable diversity in body size. In fiji it was a serious menace to the copra industry, and attempts to control it by biological means were made in 1920, when parasites were introduced from tahiti. Mussel scale lepidosaphes ulmi linnaeus and other scale insect pests. The oystershell scale lepidosaphes ulmi belongs to a group of insects called the armored scales. For the first time, literature records are shown to be erroneous for a further. All structured data from the file and property namespaces is available under the creative commons cc0 license.