. Eastern forest insects. Forest insects. F-480483 Figure 71.—Adult of the southern pine sawyer, Monochamus titillator. Two years are required to complete the life cycle in the Lake States and Canada. Farther south there is one generation per year. Adults emerge through circular holes cut in the bark and feed for short periods on needles and tender bark of various conifers. Eggs are then deposited in slits or niches chewed in the bark, preferably near old branch scars or in wrinkled areas on logs, pulpwood, and recently killed trees {773, 618). The white-spotted sawyer causes heavy losses to s
. Eastern forest insects. Forest insects. F-480483 Figure 71.—Adult of the southern pine sawyer, Monochamus titillator. Two years are required to complete the life cycle in the Lake States and Canada. Farther south there is one generation per year. Adults emerge through circular holes cut in the bark and feed for short periods on needles and tender bark of various conifers. Eggs are then deposited in slits or niches chewed in the bark, preferably near old branch scars or in wrinkled areas on logs, pulpwood, and recently killed trees {773, 618). The white-spotted sawyer causes heavy losses to sawlogs and pulpwood in the Northern States and southern Canada. Damage to sawlogs can be prevented by cutting the trees between Sep- tember and early June and removing them from the woods before F-496927 Figure 72.—Adults of the white-spotted sawyer, Mon- ochamus 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
