. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . > vines in its larva state. This is known as tlie tile-horned prionus {Pnouis imhriroiiiia). It ditfers from thebroad-necked species in having from sixteen to nineteen jointsin each antenna, whereas those of the broad-necked specieshave only twelve joints. Remedy.—Use No. 99. CHAPTER CXV. The Grape-root Louse. (Cal.)( ru-^—Planchon.) Order, Hemiptera ; ( ^^ ., . o 1 1 XT l^amilv, ApniDiD/E. Sub-order, Homopteka;
. Injurious insects of the orchard, vineyard, field, garden, conservatory, household, storehouse, domestic animals, etc., with remedies for their extermination . > vines in its larva state. This is known as tlie tile-horned prionus {Pnouis imhriroiiiia). It ditfers from thebroad-necked species in having from sixteen to nineteen jointsin each antenna, whereas those of the broad-necked specieshave only twelve joints. Remedy.—Use No. 99. CHAPTER CXV. The Grape-root Louse. (Cal.)( ru-^—Planchon.) Order, Hemiptera ; ( ^^ ., . o 1 1 XT l^amilv, ApniDiD/E. Sub-order, Homopteka; \ • [A minute yellow louse, feeding upon the roots of the grapeFig. 151. vme. sini] Fig. 151.—rjrapeRoot Louse froot-iidial)iting form) :a, an infested root;/>,hibei-natinglouseenlaiged — color,yellow: r, its an-tenna enlarged ; (/,one of its legs en-larged : r, J\ and (/,the lice enlarged—color, yellow ; /, atubercle enlarged ;/( and ,/, granula-tions t>f the skin,enlarged ; /.-, thele eyes, eidarged. 1 will not give an extended descrip-. 172 INJECTS INFESTING THE GRAPE. tion of this pest, nor an account of the damage done to vine-growers- by its ravages, as the reports of the State Board ofViticultural Commissioners, the report of Charles A. Wet-more, Chief Elxecutive Viticultural Officer; papers l)y ProfE. W. Hilgard and others, of this State, and Prof. C. \.Rileys Missouri Reports, have given full information of itsnatural history, habits, etc. Unfortunately the presence of the grape-root louse () in some of the vinej^ards of this State is establishedl)ey()n(l a doubt, and that a large acreage of vineyard propertyhas been destroyed by the ravages of this pest many of thevine-growers can offer substantial verifications. Various opinions have been expressed as to how this insectsprea<ls from one vine-growing district to another. A assertsthat the winged individuals fly from one vineyard to another,as other species of Aphididse spread on their respe
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