. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE. INSECTS. 199 is jarred. Follow up this treatment in the early part of June by spraying the infested portions of the vines with Paris green (one pound to one hundred and fifty gallons of water) to kill the g;rubs-then feeding on the upper surfaces of the leaves; every grub killed then means one less beetle to hibernate and attack the buds the next spring; it is thus very important to kill these grubs in June. The Rose-Chafer or " Rose
. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE. INSECTS. 199 is jarred. Follow up this treatment in the early part of June by spraying the infested portions of the vines with Paris green (one pound to one hundred and fifty gallons of water) to kill the g;rubs-then feeding on the upper surfaces of the leaves; every grub killed then means one less beetle to hibernate and attack the buds the next spring; it is thus very important to kill these grubs in June. The Rose-Chafer or " Rose-bug " {Macrodactylus subspinosus).— This beetle suddenly appears in great numbers in portions of the country, and in occasional years proves exceedingly de- structive to the flowers and foliage of various plants, more par- ticularly of the rose, apple, and grape. It is an awkward, long-legged, light-brown beetle (Fig. 266) about a third of an inch in length. By the end of July the unwelcome hordes often disappear as sud- denly as they came. The insect is par- ticularly destructive in New Jersey, Dela- ware, and in sandy regions in New York and neighboring States. Its early stages are passed in grass or meadow land, usu- ally where the soil is sandy. The grubs feed on the roots of grasses. The beetles lay their eggs in the ground in June and July, and the grubs get their growth by autumn, and transform to pupas, and then to beetles the following spring. It is a most difficult pest to control or kill, as they sometimes come in hordes of thousands. Substances applied to the vines to render them obnoxious to the beetles have proved of little value. The arsenicals usually will not kill them quickly enough or in sufficient numbers noticeably to reduce their ranks. When they come in swarms, the only hope is in collecting them in nets or in an inverted umbrella-shaped apparatus provided with a vessel of kerosene and water at the bottom to wet and kill the beetles. A few valu- a
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