. Eastern forest insects. Forest insects. F-500805 Figure 146.—Larva of the boxelder twig borer, Proteo- teras willing ana, in a box- elder stem. Young larvae feed singly in opening buds in the spring or on tender terminal needles which they web together. Some pupae are found on the foliage of the trees, but the majority occur immedi- ately below the ground surface. Winter is passed in the egg stage, and there is one generation per year. Zeiraphera diniana Gn. occurs all the way across southern Canada and possibly in the northern tier of States. It appears to prefer larch and spruce, but sever
. Eastern forest insects. Forest insects. F-500805 Figure 146.—Larva of the boxelder twig borer, Proteo- teras willing ana, in a box- elder stem. Young larvae feed singly in opening buds in the spring or on tender terminal needles which they web together. Some pupae are found on the foliage of the trees, but the majority occur immedi- ately below the ground surface. Winter is passed in the egg stage, and there is one generation per year. Zeiraphera diniana Gn. occurs all the way across southern Canada and possibly in the northern tier of States. It appears to prefer larch and spruce, but several other conifers are also infested. Z. fortunana (Kft.) occurs commonly from coast to coast in southern Canada. Infes- 370. 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 Baker, Whiteford L. (Whiteford Lee), 1903-. Washington : U. S. Dept. of Agriculture, Forest Service ; for sale by the Supt. of Docs. , U. S. G. P. O
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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectforestinsects
