. Bulletin of the Department of Agriculture. Agriculture. GENERIC CLASSIFICATION- OF APHIDIDAE. 3 PHYLOGENY OF THE APHIDIDAE. In many published classifications of the Apliididae those groups which according to the writer's conception are tlie most specialized have been placed as the most primitive. This is the case with those TsmAA'^/^/' £/-/o sof7Ta,^/i' Ce^a''u6A/d/if /¥or/n a^/i /(//n i' Tlx //a. u/AV/zz 7^/n(fah//iae 'Penfa/on/na. T'^^a^ Fig. 1.—Phylogeny of the hemipterous family Aphididae. insects forming in the present classification the Eriosomatinae and the Hormaphidin
. Bulletin of the Department of Agriculture. Agriculture. GENERIC CLASSIFICATION- OF APHIDIDAE. 3 PHYLOGENY OF THE APHIDIDAE. In many published classifications of the Apliididae those groups which according to the writer's conception are tlie most specialized have been placed as the most primitive. This is the case with those TsmAA'^/^/' £/-/o sof7Ta,^/i' Ce^a''u6A/d/if /¥or/n a^/i /(//n i' Tlx //a. u/AV/zz 7^/n(fah//iae 'Penfa/on/na. T'^^a^ Fig. 1.—Phylogeny of the hemipterous family Aphididae. insects forming in the present classification the Eriosomatinae and the Hormaphidinae. A study of the anatomy and the biology of aphids makes it evident that there are three main groups of living forms for which subfamily. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Department : Supt. of Docs. , Govt. Print. Off.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
