Taken together, these data suggest that several species may be masquerading under the label Lepidosaphes ulmi. Economic importance: The. Lepidosaphes ulmi (L.) Hanson, T., and E. B. Walker. [n.d.] Field guide to common insect pests of urban trees in the Northeast. Waterbury, VT: Department of. Lepidosaphes ulmi also known as oystershell scale are Scale Insects that is a pest on woody plants. The small insects attach themselves to bark and cause.

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Regular spray programmes have been reduced or eliminated to lessen the impact on natural or exotic beneficials that can keep the pest below economic threshold levels in managed orchards and gardens.

Trenchev G, Pavlov A, Merrill, ; Kozar and Konstantinova, Fresh data on the bioecology of the Armenian mussel scale Lepidosaphes malicola Borchs Diaspididae in Armenia. Continuing to use www.

Forest Pests: Insects, Diseases & Other Damage Agents

Photosynthesis, the process by which green plants and certain other organisms transform light energy…. By late July, they have formed a scale covering beneath which the white eggs are laid.

Notes on the scale-insect fauna of Poland Homoptera, Coccinea. The oystershell scale occurs in almost every state in the United States and was probably introduced from Europe.

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Checklist of the scale insects Coccoidea: Polskie Pismo Entomologiczne, 53 4: A quality product at a low price. Zashchita Rastenii MoskvaNo.

Very heavily infested branches may need to be pruned. Influence of crop-protection measures on overwintering stages of insect pests and their parasitization in apple growing.

Journal of Economic Entomology, 90 6: Department of Forests, Parks and Recreation. The mating of Physcus testaceus Masi Hym. Mussey and Potter, Unfortunately, our editorial approach may not be able to accommodate all contributions. This is because the eggs are well lepidoszphes by the covering produced by the mother scale.

Injuriousness and distribution of scale insects Homoptera: The oystershell scale Lepidosaphes ulmi L. Over one hundred and fifty host plant species are known for the oystershell scale including members of the families AceraceaeBetulaceaeCaprifoliaceaeCelastraceaeElaeagnaceaeGrossulariaceaeHydrangeaceaeJuglandaceaeOleaceaePyrolaceaeRosaceaeSalicaceae and Tiliaceae. Criticism of products or equipment not listed is neither implied nor intended.

Despite its small size, the oystershell scale can inflict great damage on the trees and shrubs on which it lives.

A list of the armoured scale insects Diaspididae and their hosts in Tasmania. Rastitelna Zashchita, 26 7: There was a problem with your submission.


The oystershell scale was collected from over host plants, but is most prevalent on apples. In the Middle East it raises annual generations and each female lays eggs. Many hosts are commonly attacked by oystershell scale, making this one of the most destructive insect pests of trees and shrubs.

Lepidosaphes ulmi (oystershell scale)

Dormant applications of oils are more likely to be effective in spring, after the scale covering has weathered. Twig and branch mortality of American Beech infested with oystershell scale.

Views Read Edit View history. Spray programmes are applied against the migratory nymphs or crawlers upon lepiidosaphes from under the parent’s cover. State rules and regulations and special pesticide use allowances may vary from state to state: Effectiveness of oils applied as dormant treatments has been more erratic with oystershell scale than with many other scales.

Click the contributor’s name for licensing and usage information. Pflanzenschutz-Nachrichten Bayer English ed. Survey of scale insect Homoptera: Apple mussel scale Scientific classification Kingdom: Internet URLs are the best.

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