WINTER BREEDING OF DIABROTICA VITTATA IN FORCING HOUSES

Extract

In the “Journal of the New York Entomological Society” for June, 1896 (Vol. IV., No. 2, p. 68), the present writer recorded the occurrence, on December 28, 1895, of adults, and larvæ from one-half to two-thirds grown, of Diabrotica vittata, in a greenhouse near Cincinnati, Ohio, that was being used for growing cucumber for winter market. The injuries inflicted upon the young cucumber plants were very serious, and resulted in a nearly total destruction of the plants. On March 25, 1899, serious injuries were again reported by the proprietors of these same greenhouses, and the complaint was accompanied by speciments of what, to all appearances, were the larvæ of this same species.