. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN 156, U. S. DEPARTMENT OF AGRICULTURE. has been noted1 in which a wireworm [Lacon (Agrypnus) murinus L.] lived in the stomach of a child. Most of our common species lay their eggs on sod or very weedy land, but the wireworms {Corymbdes spp.) of the dry-farming country of the Pacific Northwest are severe pests on land that has been seeded to wheat, by the summer fallow method, for the past 15 years, and, as this land was originally sage- brush prairie, it probably never was in sod. Several distinct kinds of true
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN 156, U. S. DEPARTMENT OF AGRICULTURE. has been noted1 in which a wireworm [Lacon (Agrypnus) murinus L.] lived in the stomach of a child. Most of our common species lay their eggs on sod or very weedy land, but the wireworms {Corymbdes spp.) of the dry-farming country of the Pacific Northwest are severe pests on land that has been seeded to wheat, by the summer fallow method, for the past 15 years, and, as this land was originally sage- brush prairie, it probably never was in sod. Several distinct kinds of true wireworms are destructive to cereal and forage crops in the United States: and since, as has already been stated, the different kinds vary more or less in their life histories, there is consequently a variation in the method of control as recommended in the fol- lowing pages of this bulletin. It is therefore quite necessary to determine the identity of the wireworm. and to meet this necessity the many species of importance as pests to cereal and forage crops are treated separately. THE WHEAT WIREWORM. (Agriotes mancus (Say), fig. 2.) The adult of the wheat wireworm is a small brown beetle a little over one- fourth of an inch in length, quite robust, and moderately covered with very short, fine hair. The larva is pale yellow in color, very evenly cylin- drical, and very highly polished. When full grown the larva measures about an inch in length and is about as thick as the lead in a lead pencil. These wireworms will be readily recognized by the singly pointed ninth abdominal segment and the two black spots on the upper side of this segment near its base. This is one of the most common wireworms of the northeastern and middle western United States. A report of this species as a pest in the dry-farming regions of TVashington State2 is undoubtedly a. Fig. 2.—The wheat wireworm [Agriotes mancus) : a, Adult bee- tle ; b, larva : c, side view of last segment of larva. All enlarged.
Size: 1224px × 2043px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1900, bookdecade1910, booksubjectagriculture
