| 单词 | oyster shell scale |
| 释义 | > as lemmasoyster shell scale oyster shell scale n. chiefly North American (a) any of several scale insects mainly of the genus Lepidosaphes, esp. L. ulmi, which attacks many trees and shrubs, including commercial fruit and hardwood trees (also called mussel scale); (b) the disease caused by such insects, characterized by small curved scales on the plant's bark. ΘΚΠ the world > plants > disease or injury > [noun] > type of disease > caused by insects canker1555 grubbing1844 oyster shell scale1877 aphis-blight1882 big bud1884 blackfly1884 fly-blight1887 scale-blight1898 parasitization1909 the world > animals > invertebrates > phylum Arthropoda > class Insecta > subclass Pterygota > [noun] > division Exopterygota or Hemimetabola > order Hemiptera > suborder Homoptera > family Coccidae or genus Coccus > lepidosaphes ulmi (oyster-shell scale) oyster shell bark-louse1868 oyster shell scale1877 1877 4th Rep. Vermont State Board Agric. 1876–7 150 The insect is shorter and stouter than that of the oyster shell scale. 1924 C. C. Deam Shrubs of Indiana 233 Some individuals of several species are attacked and even killed both in cultivation and in the wild state by the oyster-shell scale. 1993 R. H. Arnett Amer. Insects 241/2 L[epidosaphes] ulmi (Linnaeus) (Oyster Shell Scale). This very common scale insect on many ornamental and fruit trees is one species that may be recognized by its characteristic shape, which is that of an oyster shell. < as lemmas |
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