. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. I'IG. 13.—Porfornteil p;pcr, i Lowing tlio sizes of tlie perfurations in tbo first and last .ngew (origiual) use of this i^apcr during the fifth age, the worms being so largo that when tlie holes are partially obstructed by twigs or leaf stems they must force themselves through the restricted space, often cutting them- selves on the sharp edges of the i> This may be avoided by the. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability -
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. I'IG. 13.—Porfornteil p;pcr, i Lowing tlio sizes of tlie perfurations in tbo first and last .ngew (origiual) use of this i^apcr during the fifth age, the worms being so largo that when tlie holes are partially obstructed by twigs or leaf stems they must force themselves through the restricted space, often cutting them- selves on the sharp edges of the i> This may be avoided by the. 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.
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Keywords: ., bookcentury1800, booksubjectentomology, booksubjectinsects, booky