. Injurious insects of the farm and garden. With a chapter on beneficial insects. Insects. 340 INJURIOUS Fig. 146. GKAPE BERKT-MOTH. a. Pupa; 6, Chrysalis. The first moths appear in Southern Illinois and Central Missouri about the 1st of August, and as the worms are found in the grapes during the months of August and September, or even later, and as Mr. Read has kept the cocoons through the greater part of the winter, there is every reason to believe that a second brood of worms is generated from these moths, and that the second brood of worms, as is the case of the Codling-moth of t
. Injurious insects of the farm and garden. With a chapter on beneficial insects. Insects. 340 INJURIOUS Fig. 146. GKAPE BERKT-MOTH. a. Pupa; 6, Chrysalis. The first moths appear in Southern Illinois and Central Missouri about the 1st of August, and as the worms are found in the grapes during the months of August and September, or even later, and as Mr. Read has kept the cocoons through the greater part of the winter, there is every reason to believe that a second brood of worms is generated from these moths, and that the second brood of worms, as is the case of the Codling-moth of the apple, passes the winter in the cocoou, and pro- duces the moth the following spring, in time to lay the eggs on the grapes while they are forming. This worm is found in greatest numbers on such grapes as the Herbemont, or those varieties which have tender skins, and close, compact bunches; though it has also been known to occur on almost every variety grown. As already stated, there can be little doubt but that the greater part of the second brood of worms passes the winter in the cocoon on the fallen leaves; and, in such an event, many of them may be destroyed by raking up and burn- ing the leaves at any time during the winter. The ber- ries attacked by the worm may easily be detected, providing there is no " grape rot" in the vineyard, either by a discolored spot as shown at figure 145, c, or by the entire discoloi'ation and shrinking of the berry, as is shown at figure 145, d. When the vineyard is attacked by the "rot," the wormy berries are not so easily distinguished, as they bear a close resemblance to the rotting ones. All fallen berries should be picked up and destroyed. Fig. 147.— 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 Treat, Mary, b. 1835. New York, Ora
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectinsects, bookyear1887
