oystershell scale

[oi-ster-shel]

oys·ter·shell scale

[oi-ster-shel]
noun
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.


Origin:
1875–80, Americanism; oyster + shell
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
Cite This Source Link To oystershell scale

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Oystershell scale is always a great word to know.
So is bezoar. Does it mean:
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
Encyclopedia Britannica
Encyclopedia

oystershell scale

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.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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