. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. 128 ^yV economic entomology. for their distribution. As they never come to the surface, so far as we know, they are never winged, and are usually dull white in color, or with a slight tinge of green. The body is covered with a whitish powder and lacks honey-tubes. Fig. Phylloxera vastatrix.—a. unaffected rootlet of grape ; b, rootlets with newly-tormed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and root- lets ; <
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges;. Insects; Pests. 128 ^yV economic entomology. for their distribution. As they never come to the surface, so far as we know, they are never winged, and are usually dull white in color, or with a slight tinge of green. The body is covered with a whitish powder and lacks honey-tubes. Fig. Phylloxera vastatrix.—a. unaffected rootlet of grape ; b, rootlets with newly-tormed galls; c, same, with old and dried-up tissue; dd, groups of the lice on roots and root- lets ; <?,y, female pupa, from above and below ; g, h, winged females; i, an antenna ; j, oviparous wingless female and her eggs ; k, root showing location of the eggs. An advance upon those root-living species is found in Phyl- loxera, which belongs with Chcrmes in a sub-family, Chermesina,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, John Bernhard, 1858-1912. Philadelphia and London : J. B. Lippincott co.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsects, bookyear1906
