. The life of North American insects [microform]. Insects; Insectes. 236 NORTH AMERICAN INSECTS. 14 wasps; viz., that of the C?/mps oneratus (Fig. 04), and C7/nips seminator (Fig. G5), both found on the white oak. At almost any season of the year, by examining the small twigs of the white oak, we may find around them clusters of oak-balls, of the size of a small marble, which are as hard as wood. These hard excresceaces are the re- sults of the punctures made in the tender twigs by the Cynijis oneratus, who at the same time deposits its eggs in them. The swelling of these punctures is caused b
. The life of North American insects [microform]. Insects; Insectes. 236 NORTH AMERICAN INSECTS. 14 wasps; viz., that of the C?/mps oneratus (Fig. 04), and C7/nips seminator (Fig. G5), both found on the white oak. At almost any season of the year, by examining the small twigs of the white oak, we may find around them clusters of oak-balls, of the size of a small marble, which are as hard as wood. These hard excresceaces are the re- sults of the punctures made in the tender twigs by the Cynijis oneratus, who at the same time deposits its eggs in them. The swelling of these punctures is caused by the gradual enlargement of the egg, and also by the continual irritation of the little maggot, who is thus furnished with food and a secure dwelling until it is ready to perforate the oak-ball and come forth as a perfect four-winged wasp, which metamorphosis usually takes place in June or July. This little wasp is very small, being only about the sixth of an inch lonjr. Oak-balls of this kind are found every where in North America, and they might possibly be substituted for those we receive from the Levant, and which constitute such a valuable dye-stuff. They have never been used as such to our knowledge; but the suggestion is well worth the atten- tion of chemists and dyers ; for, if experiment should prove them as valuable as the foreign oak-balls, a vast amount Figure The Sower 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 Jaeger, B. (Benedict); Preston, H. C. (Henry C. ). New York : Harper
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectinsects, bookyear1864
