. Eastern forest insects. Forest insects. F-504087 Figure 200.—Cross-section of an oak log showing galleries made by carpenter ants. and are kept free of frass. The presence of large black ants run- ning about the house; swarms of large black, winged ants about the house in the spring; piles of sawdust-like borings; slit-like holes in woodwork such as window and door casings; and faint rustling sounds in walls, floors, woodwork, and flush-panel doors are all evidences of infestation in a house. Where infestations are of long standing, damage to structural timbers may be severe and require exte
. Eastern forest insects. Forest insects. F-504087 Figure 200.—Cross-section of an oak log showing galleries made by carpenter ants. and are kept free of frass. The presence of large black ants run- ning about the house; swarms of large black, winged ants about the house in the spring; piles of sawdust-like borings; slit-like holes in woodwork such as window and door casings; and faint rustling sounds in walls, floors, woodwork, and flush-panel doors are all evidences of infestation in a house. Where infestations are of long standing, damage to structural timbers may be severe and require extensive repairs. Telephone and telegraph poles also are subject to serious damage (fig. 201) (272). Overwintering males and females in colonies over 3 years old engage in nuptial flights from May to late July. Fertilized females then establish nests in cavities, usually under the bark of a tree,. COURTESY CONN. AGR. EXPT. STA. Figure 201.—Colony of carpenter ants in a 2-foot section of a tele- phone pole in winter. Arrow in- dicates ground level. 488. 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
