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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Privacy policy About Bugwoodwiki Disclaimers. The Canadian Entomologist, 1: Bugguide is hosted by: Catharanthus roseus Madagascar periwinkle. Acta Agronomica Academiae Scientiarum Hungaricae, 28 Oystershell Lepudosaphes Lepidosaphes ulmi L.

Influence of crop-protection measures on overwintering stages of insect pests and their parasitization in apple growing. In general, insects overwinter in the egg stage in groups of under the scale cover. Branches may become encrusted and exhibit die-back. More information about modern web browsers can be found at http: Oystershell scales are armored, light to dark brown, lepidosapes and oyster-shaped. The mussel scale of apple and its parasites.

Oystershell Scale

Distribution Maps Top of page Uli can pan and zoom ukmi map. Nakahara, ; Tang, Internet URLs are the best. Pests of cultivated Chamaecytisus proliferus L. Merrill, ; Kozar and Konstantinova, Annals of the Entomological Society of Quebec, 15 2: Some polyphagous Homoptera gain protection from their natural enemies by feeding on the toxic plants Spartium junceum and Erythrina corallodendrum Leguminosae. Checklist of the scale insects Coccoidea: Kozarzevskaja and Vlainic, ; Milek et al.


Dormant applications of oils are more likely to be effective in spring, after the scale covering has weathered. Investigations on the biology of some species of Coccoidea Ulki injurious to apple trees in the Province of Ankara.

Control of diaspidid scales on olive trees by releasing coccinellid predators. Infestations may cause leaf yellowing, fruit deformity, leaf drop and dieback of branches. Parent, ; Parent, Parasitic wasps kill a few and a predatory mite has been observed to feed on overwintering eggs. Ecological-physiological study on the arrests of embryonic development in the scale insect Lepidosaphes ulmi L. Journal of Economic Entomology, 90 6: This page was last modified Species of chalcidoid parasites of some injurious coccids.

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

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. The scale insects Homoptera: Llepidosaphes Disease Reporter, 61 7: State rules and regulations and special pesticide use allowances may vary from state to state: Discussion View source History.


Anzeiger fur Schadlingskunde und Pflanzenschutz. Distribution and density of scale insects Homoptera: Chalcidoideaparasites of the oystershell scale, Lepidosaphes ulmi Homoptera: Click the contributor’s name for licensing and usage information. Pests of Rosa damascena Mill.

Knowledge Bank home Change location. Coccoidea in cultural biotopes in Belgrade. Phenological correlations between flowering plants and activity of urban landscape pests in Kentucky.

Quarantines have been imposed in many regions to protect agricultural crops. Babayan and Oganesyan, 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

Controlling Shield Scales of Deciduous Trees. Journal of the Tennessee Academy of Science, 55 3: Discover some of the most interesting and trending topics of The perivulvar pores are arranged in five clusters, about in two groups on either side of the anus.

Control is by dormant, or horticultural, oil spray and natural enemies such as birds, mites, and parasitic wasps. Das Chronicles, 2 With notes on certain species from Texas.