. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. F Pig. 40.—Stages in the hypermetamorphosis of Epicauta. A, Triungulin; B, carabidoid stage of second larva; C, ultimate stage of second larva; D, coarctate larva; E, pupa; F, imago. E is species cinerea; the others are litlata. All enlarged except F. {After Riley, from Trans. St. Louis Acad. Science.) of the larval organs are reconstructed into imaginal or adult tissues. The imaginal organs arise from embryonal tissue
. Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada. Beneficial insects; Insect pests; Insects; Insects. F Pig. 40.—Stages in the hypermetamorphosis of Epicauta. A, Triungulin; B, carabidoid stage of second larva; C, ultimate stage of second larva; D, coarctate larva; E, pupa; F, imago. E is species cinerea; the others are litlata. All enlarged except F. {After Riley, from Trans. St. Louis Acad. Science.) of the larval organs are reconstructed into imaginal or adult tissues. The imaginal organs arise from embryonal tissues (the imaginal buds) which for the most part remain practically dormant in the larval stage; in the pupal stage the purely larval organs disappear and the imaginal organs continue their development. Histolysis is the term used to ex- press the destruction of larval tissue by leucocytes, and histogenesis for the construction of imaginal tissues. Imaginal Buds.—The reproductive organs, the dorsal vessel, and the nervous system gradually mature, but many of the organs develop. 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 Lochhead, William, 1864-1927. Philadelphia : Blakiston
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
