. Economic entomology for the farmer and fruit-grower . Sphenophoriis ochrcus.—Adult, larva, and work in roots o(Scirpus. covering with canvas or similar material to prevent the too rapid escape of the fumes which gradually permeate the entire mass of grain, killing everything in it. Closing the series we have the bark-beetles, or Scolytids, some of them called shot-hole borers from the little round holes with blackened edges which they make in wood and bark. Many species make prettily-figured burrows between the bark and sap- wood, while others bore into the solid wood, making longer or short
. Economic entomology for the farmer and fruit-grower . Sphenophoriis ochrcus.—Adult, larva, and work in roots o(Scirpus. covering with canvas or similar material to prevent the too rapid escape of the fumes which gradually permeate the entire mass of grain, killing everything in it. Closing the series we have the bark-beetles, or Scolytids, some of them called shot-hole borers from the little round holes with blackened edges which they make in wood and bark. Many species make prettily-figured burrows between the bark and sap- wood, while others bore into the solid wood, making longer or shorter galleries. Most of the species attack forest-trees, and for them reference should be had to Dr. Packard's work already cited.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbenefic, bookyear1906
