. Cooperative economic insect report. Beneficial insects; Insect pests. - 558 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During period May 17-23, a total of 7 screw-worm cases was reported from TEXAS. First screw-worm cases of this year were reported from Coryell, Dimmit and Frio Counties, Other counties reporting screw-worm cases were Kenedy (1) , Goliad (1) and Maverick (1). The Republic of Mexico reported 36 screw-worm cases from the States of Sonora (18), Chihuahua (1), Coahuila (1), Nuevo Leon (2), Tamaulipas (12) and San Luis Potosi (2). A total of 94,414,050 s
. Cooperative economic insect report. Beneficial insects; Insect pests. - 558 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During period May 17-23, a total of 7 screw-worm cases was reported from TEXAS. First screw-worm cases of this year were reported from Coryell, Dimmit and Frio Counties, Other counties reporting screw-worm cases were Kenedy (1) , Goliad (1) and Maverick (1). The Republic of Mexico reported 36 screw-worm cases from the States of Sonora (18), Chihuahua (1), Coahuila (1), Nuevo Leon (2), Tamaulipas (12) and San Luis Potosi (2). A total of 94,414,050 sterile screw- worm flies was released: 31,540,250 in Texas, 492,000 in New Mexico and 62,381,800 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 Current Ratio of Cases Positive to Negative** Cumulative 1962 1,694 7,918 1963 127 1,017 1964 7 64 139 1,402 268 3,025 211 3,061 1,318:1,000 5,647:1,000 473:1,000 336:1,000 33:1,000 21:1,000 * 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 17 - 23 . — . — .-—.- 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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Keywords: ., bookcentury1900, booksubjectbeneficialinsects, booksubjectinsect
