. Cooperative economic insect report. Beneficial insects; Insect pests. - 873 INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES CABBAGE MOTH (Mamestra brassicae (L.)) Economic Importance: The larvae of the cabbage moth are very destructive to vegetables, particularly cabbage and other crucifers, and ornamental flowers in Europe and Asia. Though injury is of less general importance, sugar beets, tobacco and hemp are sometimes heavily damaged. In the , Mamestra brassicae is considered to be more injurious to cabbage than Pieris brassicae because the larvae bore into the heart of the plant
. Cooperative economic insect report. Beneficial insects; Insect pests. - 873 INSECTS NOT KNOWN TO OCCUR IN THE UNITED STATES CABBAGE MOTH (Mamestra brassicae (L.)) Economic Importance: The larvae of the cabbage moth are very destructive to vegetables, particularly cabbage and other crucifers, and ornamental flowers in Europe and Asia. Though injury is of less general importance, sugar beets, tobacco and hemp are sometimes heavily damaged. In the , Mamestra brassicae is considered to be more injurious to cabbage than Pieris brassicae because the larvae bore into the heart of the plant to a greater extent. However, when populations are extremely numerous, whole plants may be destroyed. In Bulgaria the annual loss of cabbage attributed to this pest has been estimated at from 20 to 30 percent, with up to 80 percent loss in some badly infested localities. Larval counts have averaged up to 50 per plant in severe infestations in that country. M. brassicae has been taken with increasing frequency since 1945 at U. S. ports of entry, principally at Damage to Dahlia Atlantic Coast Distribution: Occurs generally throughout Europe; also recorded in Libya, Turkey, Iran, Kashmir, West Pakistan, India (Punjab), China (Tibet and Northern China), Korea, Japan, Asiatic part of and the Canary Islands. Hosts: This is a general feeder and will live upon many kinds of plants, both cultivated and wild. Crucifers probably suffer most, but tomatoes, tobacco, lettuce, onions, corn, hemp, soybeans, peas, vetch, flax and several ornamentals including calendula, gladiolus, geranium and lupine are quite often 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 United States. Animal and Plant Health Service. Plant Protection and Quarantine Programs; United States. Bureau of Entomology and Plant
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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
