. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. LIFE HISTORY. 15 Table I.—Rate of deposition of young by winged migrants of the hop aphis from prune trtes. Date and number deposited. Total. Became winged. May 28. May 29. May 30. May 31. June 1. June 3. Mav 28 - - 1 2 1 2 4 2 3 4 1 1 7 Do - - 1 5 Do 1 1 1 1 5 Do 1 8 1 1 2 3 1 1 The data in Table I were obtained by isolating nymphs, taken from the prune trees, upon clean prune leaves in covered jelly glasses. When the winged insect appeared it was immediately placed upon a hop leaf. The deposited young were
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. LIFE HISTORY. 15 Table I.—Rate of deposition of young by winged migrants of the hop aphis from prune trtes. Date and number deposited. Total. Became winged. May 28. May 29. May 30. May 31. June 1. June 3. Mav 28 - - 1 2 1 2 4 2 3 4 1 1 7 Do - - 1 5 Do 1 1 1 1 5 Do 1 8 1 1 2 3 1 1 The data in Table I were obtained by isolating nymphs, taken from the prune trees, upon clean prune leaves in covered jelly glasses. When the winged insect appeared it was immediately placed upon a hop leaf. The deposited young were removed 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. Bureau of Entomology. Washington : G. P. O.
Size: 2256px × 1108px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubje, booksubjectentomology
