Grape-Root Louse

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Phylloxera Vastatrix, a grape-vine-root gall-louse, is by many entomologists supposed to be another form of the Pemphigus vitifoliae above mentioned, but that, instead of living above ground and forming hollow bag-like galls on the leaves, it lives under-ground on the roots, upon which it forms knotty swellings or galls.


klice, bugs, aphis, Aphids


Report of the Commissioner of Agriculture of the Operations of the Department for the Year 1876 (Washington: Goverment Printing Office. 1877) 40


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