. Insects affecting vegetables [microform]. Légumes; Vegetables; Insect pests; Insectes nuisibles. Fig. 16.—Blue Asparagus beetle, larva and eggs—magnified. Fig. 17. Twelve-spotted Pig. IS.—Blue Aspara- Asparagus beetle,^ gus beetle, larva and magnified. eggs on a shoot. Other species is the same length, aboat a quarter of an inch, but is somewhat stouter; the whole insect is dull red and polished and has twelve round black spots on the wing-covers. Both these beetles pass the winter in the adult stage and are ready to attack the asparagus shoots as soon as they appear above ground in the spri
. Insects affecting vegetables [microform]. Légumes; Vegetables; Insect pests; Insectes nuisibles. Fig. 16.—Blue Asparagus beetle, larva and eggs—magnified. Fig. 17. Twelve-spotted Pig. IS.—Blue Aspara- Asparagus beetle,^ gus beetle, larva and magnified. eggs on a shoot. Other species is the same length, aboat a quarter of an inch, but is somewhat stouter; the whole insect is dull red and polished and has twelve round black spots on the wing-covers. Both these beetles pass the winter in the adult stage and are ready to attack the asparagus shoots as soon as they appear above ground in the spring; these they gnaw and spoil for table use and the Blue species "deposits upon tx em its shmy black eggs which are attached by the tip i, the plants. Later on the eggs of both species may be found upon the growing plants and the larva soon appear. Those of the Blue beetle are dark olive gray grubs, which feed openly upon the foliage; the grubs of the 12-8potted are yellowish or somewhat orange in color, feedmg at first upon the tender foliage, but boring into and devouring the pulp of the seed capsules as soon as they are large enough to attack. The life cycle of both kinds requires only six or seven weeks for its completion and we therefore find all through the season, till sharp frosts come in the autumn, eggs, larvffi and beetles in great numbers at the same time; the pupal stage is passed beneath the surface of the ground. Bemedies. The simplest and most eflScient remedy is to let poultry have the run of the beds; they will devour both beetles and grubs and will not touch the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Bethune, Charles J. S. (Charles James Stewart), 1838-1932; Ontario. Dept. of Agriculture. Toronto : Dept. of Agriculture
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Keywords: ., bookcentury1900, bookdecade1910, booksubj, booksubjectinsectpests
