Phylloxera Vastatr
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Phylloxera Vastatrix- a, an unaffected rootlet of grape; b, rootlets with newly-formed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and rootlets.
Galleries
Flowers and Shrubs: PSource
John B. Smith Economic Entomology (Philadelphia and London: J.B. Lippincott Co, 1896)
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