. Cooperative economic insect report. Insect pests Control United States Periodicals. - 736 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period June 21 - 27, four screw-worm cases were confirmed in TEXAS; Kerr County reported its first case of the year. Infestations were also reported from Val Verde (2) and De Witt (1) Counties. In NEW MEXICO, 3 cases were reported in Dona Ana County; 2 cases were reported in ARIZONA, one case each in Pinal and Pima Counties. The Republic of Mexico reported 51 screw-worm cases from the States of Sonora (27), Chihuahua (5), C
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 736 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period June 21 - 27, four screw-worm cases were confirmed in TEXAS; Kerr County reported its first case of the year. Infestations were also reported from Val Verde (2) and De Witt (1) Counties. In NEW MEXICO, 3 cases were reported in Dona Ana County; 2 cases were reported in ARIZONA, one case each in Pinal and Pima Counties. The Republic of Mexico reported 51 screw-worm cases from the States of Sonora (27), Chihuahua (5), Coahuila (3), Nuevo Leon (4) and Tamaulipas (12). A total of 96,865,450 sterile flies was released: 26,227,450 in Texas, 5,392,000 in Arizona, 1,710,000 in New Mexico and 63,536,000 in Mexico. The following is a comparison of specimens reported during corresponding weeks in 1962 and 1963. Ratio of Cases Positive Cases Negative Cases* Positive to Negative** Year Current Cumulative Current Cumulative Current Cumulative 1962 2 ,403 17,890 43 1,852 5,:100 :100 1963 139 1,761 144 3,901 :100 :100 1964 7 88 119 3,788 :100 :100 * The number of cases not screw-worm is an index of the efficiency of the reporting system. ** A comparison of the ratios of screw-worm cases to cases that are not screw- worm is an index of the change in number of screw-worm 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. Bureau of Entomology and Plant Quarantine; United States. Plant Pest Control Branch; United States. Plant Pest Control Division; United States. Animal and Plant Health Inspection Service. Plant Protection and Quarantine Programs. Washington, D. C. : U. S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine
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