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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Karsemeijer, ; Dijke and Leppidosaphes, ; Helsen et al. University Microfilms Catalogue Dissertationpp. Rastitelna Zashchita, 27 3: The information herein is supplied with the understanding that no discrimination is intended and that listing of commercial products, necessary to this guide, implies no endorsement by the authors or the Extension Services of Nebraska, Colorado, Wyoming or Montana.

Oystershell Scale

Our editors will u,mi what you’ve submitted, and if it meets our criteria, we’ll add it to the article. Look for tiny brown to gray oystershell-shaped scales, usually densely packed, on the bark a, b. The male is winged, white-yellow in color. Acta Phytopathologica et Entomologica Hungarica, 23 Insects of Eastern Hardwood Trees.


Many scales and overwintering eggs die if areas of bark beneath them are killed. From Wikipedia, the free encyclopedia. Oystershell Scale From Bugwoodwiki.

Branches that are heavily infested should be pruned out. The parasitoid, Epitetracnemus zetterstedti, is used for biological control in several countries. Go to distribution map The mussel scale of apple and its parasites. Insects of Eastern Forests. Diaspididae on olive trees in Greece.

Lepidosaphes ulmi (oystershell scale)

Annals of Warsaw Agricultural University, Old scales remain in place for several years after the scales have died. Tereznikova, ; Baganich, On smaller trees, old scale coverings and eggs can be destroyed by scrubbing the bark with a soft plastic pad.

Bognar S, Vinis G, If you would like to, you can learn more about the cookies we use. Kunkel in the Canaries. Arboricoltura da Legno, 25 5: The bark was covered with them. Coccoidea of the Leningrad region. Phenology, embryonic diapause and importance of natural enemies of Lepidosaphes ulmi L. Dedicated naturalists volunteer their time and resources here to provide this service.


Dietz HF, Morrison H, Thank You for Your Contribution! Phenological correlations between flowering plants and activity of urban landscape pests in Kentucky.

On some hosts the scale is covered with a fine powder of wax. Journal of Entomological Research, New Delhi, lepidosapues 3: Descriptions of first instars of nominal type-species of eight diaspidid tribes. Phenology, embryonic diapause and importance of natural enemies of Lepidosaphes ulmi L.

Observation on the scale insects injurious to forestry of North China. The anterior abdominal segments bear hyaline spurs, and as well as single, sclerotized, strong spurs between the segments.

oystershell scale (Lepidosaphes ulmi ) on quaking aspen (Populus tremuloides ) –

Hemiptera attacking Euramerican poplars. Integrated pest management in Swiss apple orchards: The Canadian Entomologist, 33 6: Scale insects polyphagous pests of tree species. An annotated list of the scale insects Homoptera: Journal of Economic Entomology, 90 6: