. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Larva, a, and ;, of rose-chafer ; b Xo e, ,i;, It, structural details. to actually collecting the specimens from the vines by means of funnel or umbrella-shaped collectors, adapted to the method of cultivation in use. They drop readily when the vines are jarred, and the collector should be so made as to roll them to the centre and into an attached pail containing kerosene. This must be done not only daily, but continuously for several days until the flight is
. Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; . Larva, a, and ;, of rose-chafer ; b Xo e, ,i;, It, structural details. to actually collecting the specimens from the vines by means of funnel or umbrella-shaped collectors, adapted to the method of cultivation in use. They drop readily when the vines are jarred, and the collector should be so made as to roll them to the centre and into an attached pail containing kerosene. This must be done not only daily, but continuously for several days until the flight is over or the grapes have set, for well-set grapes are rarely eaten. Fortunately, a period of abnormal increase seems to be followed by a period of decrease, though the lengths of the periods have not been ascertained. The larvae feed in light land on the roots of various plants, but principally on grass. They pupate in spring, shortly before changing to the ?dult condition, and by ploughing infested sod at this time a large proportion can be destroyed. When only moderate numbers occur, lime often serves to protect the plants, or, better, the Bordeaux mixture, which is distasteful to them. The "May-beetles," or "June-bugs," sometimes termed " cockchafers," are much larger, and mostly members of the genus
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
