. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Sc*R*MtCu*/stA 5c. Fic;. 91.—Venation of Mucro- siphum. {After Patch.) Fig. 92.—Venation of Tuxoplera. (After Patch.) l^lanl-lice or Aphids are gregarious sucking insects, often abundant on many varieties of plants, and doing much injury. Three forms occur: i. sedentary wingless viviparous agamic females, 2. migra- tory winged vivi})arous agamic females, 3. sexual males and females —the females ()vi])arous and wingless and the males winged or wingless. 5c*R-^M^CutlstA sc Rs Sc*R*M*Ca*l
. Class book of economic entomology. Insects, Injurious and beneficial. [from old catalog]; Insects; Insects. Sc*R*MtCu*/stA 5c. Fic;. 91.—Venation of Mucro- siphum. {After Patch.) Fig. 92.—Venation of Tuxoplera. (After Patch.) l^lanl-lice or Aphids are gregarious sucking insects, often abundant on many varieties of plants, and doing much injury. Three forms occur: i. sedentary wingless viviparous agamic females, 2. migra- tory winged vivi})arous agamic females, 3. sexual males and females —the females ()vi])arous and wingless and the males winged or wingless. 5c*R-^M^CutlstA sc Rs Sc*R*M*Ca*lstA. 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- [from old catalog]. Philadelphia, P. Blakiston's son & co
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsects, bookyear1919
