. Cutworms and their control [microform]. Vers gris; Cutworms; Insect pests; Insectes nuisibles. 10 wlnfH variPH from n palp clay yollow to n In^uutiful dark ml. Thr front winin *"' t"*",,''"'"'"*'" '»y four or five irn-gular lincH, Home of wliiih in Home ».iM'<iin«'n« are hanlly tnuM-aliii'. Thpno wingH, in mo«t i-xampli'M, In'ar heavy lonnpicuouii t)lack markingH, particularly near the bane of the wing ami «m eitlier nide of the round arnl kidney-Mhap«'d mark« in the centre of the upp«'r half of each wing. The hind wingn are UHually «lurk, paler in the c
. Cutworms and their control [microform]. Vers gris; Cutworms; Insect pests; Insectes nuisibles. 10 wlnfH variPH from n palp clay yollow to n In^uutiful dark ml. Thr front winin *"' t"*",,''"'"'"*'" '»y four or five irn-gular lincH, Home of wliiih in Home ».iM'<iin«'n« are hanlly tnuM-aliii'. Thpno wingH, in mo«t i-xampli'M, In'ar heavy lonnpicuouii t)lack markingH, particularly near the bane of the wing ami «m eitlier nide of the round arnl kidney-Mhap«'d mark« in the centre of the upp«'r half of each wing. The hind wingn are UHually «lurk, paler in the centre an«l at haw. The Iwdj lit of the name colour at* the front Fio. (R<Hl-ba<k«lCutworm, ;iiM-kropoihr. a. at ret; h, with wincauprwd-nutunil nu: HabiU and Life-history.—Thv Hed-hacked Cutworm is the most regularly occurrmg and, on the whole, the most detttructive cutw«)rm which we have in (janada. It m present in every province of the Dominion, and attacks not only all kmds of garden and fieUl crops, hut practically every succulent plant which happens to be nearby, esp«'cinlly if the same is of any value. In flower beds annuals are often entirely destroyed by the ravages of this cutworm. In Eastern Canada, vegetables, such as cabbages, cauliflowers, beets, radishes, etc., are destroyed every year, and in the western provinces much injury is done to oats oftentimes whole fields being entirely ruined. Wheat, barley, etc are also attacked. ' The moths of this cutworm appear at the end of June and during July and August, some years even later, the actual time depnding upon seasonal con- ditions. In ordinary years the moths occur in the largest numbers during the latter half of July and during early August. At Ottawa, the species has been found to pass the winter in the egg state, but whether this is always the case 18 not known. Eggs deposited in October di' not hatch until April 20. Coter- pillars from these eggs became full-gro
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectinsectp, bookyear1915
