Word Study
bark louse
CIDE DICTIONARY
bark louse,
An insect of the family Coccidæ , which infests the bark of trees and vines. [1913 Webster]
" The wingless females assume the shape of scales. The bark louse of the vine is Pulvinaria innumerabilis ; that of the pear is Lecanium pyri . See Orange scale ." [1913 Webster]
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