. Cooperative economic insect report. Beneficial insects; Insect pests. - 587 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period May 24-30, a total of 7 screw-worm cases was reported from TEXAS. First screw-worm cases of this year were reported from Lampasas (1), Mason (2), Schleicher (2) and Bexar (1). Bee County also reported one case. The Republic of Mexico reported 61 screw-worm cases from the States of Sonora (28), Coahuila (8), Nuevo Leon (8), Tamaulipas (15) and Jalisco (2). A total of 100,942,650 sterile screw-worms was released: 32,786,250 in Texas
. Cooperative economic insect report. Beneficial insects; Insect pests. - 587 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period May 24-30, a total of 7 screw-worm cases was reported from TEXAS. First screw-worm cases of this year were reported from Lampasas (1), Mason (2), Schleicher (2) and Bexar (1). Bee County also reported one case. The Republic of Mexico reported 61 screw-worm cases from the States of Sonora (28), Coahuila (8), Nuevo Leon (8), Tamaulipas (15) and Jalisco (2). A total of 100,942,650 sterile screw-worms was released: 32,786,250 in Texas, 1,942,000 in New Mexico, 400,000 in Arizona and 65,814,400 in Mexico. The following is a comparison of specimens reported during corresponding weeks in 1962 and 1963: Year Positive Cases Current Cumulative Negative Cases* Current Cumulative Ratio of Cases Positive to Negative** Current Cumulative 1962 1,853 9,771 1963 154 1,170 1964 7 71 105 1,507 213 3,238 168 3,229 1,764:1,000 6,483:1,000 723:1,000 361:1,000 41:1,000 22:1,000 * 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 numbers of screw-worm cases. (Anim. Dis. Erad. Div.).. Figures - Number of cases reported in infested counties for period May 24 - 30 »⢠â â â â â Limits of fly drop areas Linear drop along river valleys. 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 Quarantine; United States. Plant Pest Control Division. Hyattsville, MD. [etc. ] Plant Protection and Quarantine Programs Animal and Plant Health Service
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