. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN 737, U. S. DEPABTMENT OF AGBICULTTJBE. last two names may have originated from confusion of the species with a field insect, the tobacco flea-beetle, Epitrix parvula, which attacks growing tobacco, the holes eaten in the leaf showing in the cured leaf tobacco and somewhat resembling holes made by the true tobacco beetle, Lasiodemia serricorne. The name " cigarette beetle " has been quite generally used in entomological literature but is not suitable as it conveys the impression that the insect confin
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN 737, U. S. DEPABTMENT OF AGBICULTTJBE. last two names may have originated from confusion of the species with a field insect, the tobacco flea-beetle, Epitrix parvula, which attacks growing tobacco, the holes eaten in the leaf showing in the cured leaf tobacco and somewhat resembling holes made by the true tobacco beetle, Lasiodemia serricorne. The name " cigarette beetle " has been quite generally used in entomological literature but is not suitable as it conveys the impression that the insect confines its work to cigarettes whereas it is a general feeder upon all cured tobacco prod- ucts. Throughout this bulletin the name " tobacco beetle," which was used by Mr. E. A. Schwarz in earlier accounts of the insect, is adopted, as the present consideration of the insect refers to its depredations upon all forms of cured and manu- factured tobacco. THE CHARACTER OF ITS INJURY. The injury caused by the tobacco beetle is very great, owing to its habit of occupying its food sub- stance during all stages of its life. The principal damage is done by the larva or " worm '5 stage, and with tobacco, as with other food sub- stances, the actual amount consumed usualty is of far less importance than is the presence of refuse, ex- crement, dust, and the dead beetles, â CS which render the manufactured W wj W product unsalable. V W The insect damages cigars (fig. 1) and pressed tobacco b}' burrow- ing small cylindrical tunnels which later become filled with dust and ex- crement. In cigars the holes may extend from one side to the other, and in some instances the holes or galleries may wind through the filler of the cigar, a large part of the interior being thus destroyed without external evidence of injury to the wrapper. The larvae often will work between two closely packed cigars, slitting both wrappers lengthwise for some .listance, and the pupal cells frequently are const
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