oystershell scale

oystershell scale
/oy"steuhr shel'/
a scale insect, Lepidosaphes ulmi, having a scale shaped like the shell of an oyster, which infests various deciduous trees and shrubs. Also called oyster scale.
[1875-80, Amer.; OYSTER + SHELL]

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insect
 a species of insect in the armoured scale family, Diaspididae (order Homoptera), that is found on woody plants and secretes a hard, tough protective covering that resembles a miniature oystershell. Despite its small size, the oystershell scale can inflict great damage on the trees and shrubs on which it lives. Control is by dormant, or horticultural, oil spray and natural enemies such as birds, mites, and parasitic wasps.

      The life histories of the oystershell scale, as well as the size and colour of the cover of the adult female, vary according to the host. The oystershell scale is found on lilacs, beeches, maples, willows, and many ornamentals. The oystershell scale occurs in almost every state in the United States and was probably introduced from Europe.

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Universalium. 2010.

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  • Oystershell scale — is a common name used to describe several species of scale insects that are pests of woody plants.* Quadraspidiotus ostreaeformis , a pest in New Zealand and Europe, also called the European fruit scale in North America. * Lepidosaphes ulmi , a… …   Wikipedia

  • oystershell scale — noun also oystershell bark louse : an abundant widely distributed scale insect (Lepidosaphes ulmi) that infests and greatly injures various trees and shrubs see fig scale * * * /oy steuhr shel / a scale insect, Lepidosaphes ulmi, having a scale… …   Useful english dictionary

  • Oystershell — may refer to: The shell of an oyster A product made from the shell of the oyster, such as calcium supplements for humans or laying hens Oystershell scale, a type of insect Oystershell NV, a technology company in over the counter medicinal… …   Wikipedia

  • scale insect — any of numerous small, plant sucking homopterous insects of the superfamily Coccoidea, the males of which are winged and the females wingless, often covered by a waxy secretion resembling scales. [1830 40] * * * Any member of several families of… …   Universalium

  • oystershell bark louse — noun see oystershell scale …   Useful english dictionary

  • apple scale — noun : any scale infesting the apple tree; especially : oystershell scale …   Useful english dictionary

  • fig scale — noun : an elongate armored scale (Lepidosaphes ficus) that is related to the typical oystershell scale and that feeds on fig trees …   Useful english dictionary

  • Lepidosaphes ulmi — Apple mussel scale Scientific classification Kingdom: Animalia Phylum …   Wikipedia

  • Diaspididae — Aulacaspis yasumatsui the cycad aulacaspis scale Scientific classification Kingdom …   Wikipedia

  • lepidosaphes — ˌlepəˈdäsəˌfēz noun Usage: capitalized Etymology: New Latin, from lepid + Greek saphēs clear, distinct : a genus of destructive armored scales including the oystershell scale …   Useful english dictionary

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