. An annotated list of the important North American forest insects. Forest insects. ffT'^'Sji '.-'''"^????????l treatment is required. Partially damaged material which is too valuable to be de- stroyed should be sal- vaged, when practi- cable, by trimming off and burning the sap edges and other dam- aged and infested parts. POWDER POST CAUSED BY PTINIDAE AND ANOBI- mAE This damage con- sists of small holes one-sixteenth to one- eighth of an inch in diameter and irregu- lar burrows in the wood of both soft- woods and hardwoods (fig. 30). The dam- age is similar to that caused by Lyctus bee
. An annotated list of the important North American forest insects. Forest insects. ffT'^'Sji '.-'''"^????????l treatment is required. Partially damaged material which is too valuable to be de- stroyed should be sal- vaged, when practi- cable, by trimming off and burning the sap edges and other dam- aged and infested parts. POWDER POST CAUSED BY PTINIDAE AND ANOBI- mAE This damage con- sists of small holes one-sixteenth to one- eighth of an inch in diameter and irregu- lar burrows in the wood of both soft- woods and hardwoods (fig. 30). The dam- age is similar to that caused by Lyctus bee- tles, except that softwoods are also attacked and the defect occurs -^ in the heartwood. Most injury by Ptinidae is caused to seasoned wood, or logs that have been left lying in the woods too Fui -l^owder-postert southorn yellow pino damaged by Hplotrupes bajulus lioards POWDER POST CAUSED BY BOSTRICHIDAE This damage consists of circular holes one-eighth to three-eighths of an inch in diameter and irregular longitudinal burrows filled with frass, or with coarser dust in the sapwood and heartwood of hard- woods, which does not fall out so readily. (Figs. 31 and 32.) These insects -^ attack freshly felled logs with the bark on. The eggs are laid within the log near holes made by the adult beetles. Submerging the logs in the mill pond and prompt utilization will ])revent much loss. In the case of vehicle, handle, and similar -^ This defect is caused by Xyletinus peltatua Harris, which attacks both hardwoods and .softwoods. 2-» Bostrichidac^: Scobicia, Xylobiops, 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 Craighead, Frank C. (Frank Cooper), 1890-; Perry, George S; Snyder, Thomas Elliott, b. 1885; Hopkins, A. D. (Andrew Delmar), 1857-1948; MacAloney, Harvey John, 1896-; Graham, Samuel Alexand
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Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
