Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Sphenophoriis ochreus.—Adult, larva, and work in roots o(Scirpus. covering with canvas or similar material to prevent the toorapid escape of the fumes which gradually permeate the entiremass of grain, killing everything in it. Closing the series we have the bark-beetles, or Scolytids, someof them called shot-hole borers from the little round holes withblackened edges which they make in wood and bark. Manyspecies make prettily-figured burrows between the bark and sap-wood, whi
Economic entomology for the farmer and fruit-grower : and for use as a text-book in agricultural schools and colleges . Sphenophoriis ochreus.—Adult, larva, and work in roots o(Scirpus. covering with canvas or similar material to prevent the toorapid escape of the fumes which gradually permeate the entiremass of grain, killing everything in it. Closing the series we have the bark-beetles, or Scolytids, someof them called shot-hole borers from the little round holes withblackened edges which they make in wood and bark. Manyspecies make prettily-figured burrows between the bark and sap-wood, while others bore into the solid wood, making longer orshorter galleries. Most of the species attack forest-trees, and forthem reference should be had to Dr. Packards work already cited. 238 AN ECONOMIC ENTOMOLOGY. These beetles differ from all the other weevils in their cylin-drical form and very short snout, which is scarcely more than aslight prolongation of the head, and they are usually of smallsize, most of them not exceeding one-eighth of an inch in length. Fig. 245.
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectinsectp, bookyear1906
