. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochliomyia hominlvorax) IN THE SOUTHWEST During the period December 6-12, only one screw-worm infestation was reported in the Southwestern Eradication Area and this from Atascosa County, TEXAS. No cases were reported from NEW MEXICO or ARIZONA. The Republic of Mexico reported 90 cases: Sonora 40, Veracruz 5, Chihuahua 15, Puebla 1, Coahuila 8, Tamaulipas 14, Durango 4, San Luis Potosi 1 and Nuevo Leon 2. Sterile screw-worm flies released: Texas 20,134j2503 New Mexico 2,560,000, Arizona 5,720,000


. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochliomyia hominlvorax) IN THE SOUTHWEST During the period December 6-12, only one screw-worm infestation was reported in the Southwestern Eradication Area and this from Atascosa County, TEXAS. No cases were reported from NEW MEXICO or ARIZONA. The Republic of Mexico reported 90 cases: Sonora 40, Veracruz 5, Chihuahua 15, Puebla 1, Coahuila 8, Tamaulipas 14, Durango 4, San Luis Potosi 1 and Nuevo Leon 2. Sterile screw-worm flies released: Texas 20,134j2503 New Mexico 2,560,000, Arizona 5,720,000 and Mexico 51,328,800. Ratio of Positive Cases Positive Cases Negative Cases to 100 Cases Negative Year Current Cumulative Current Cumulative Current Cumulative Table 1. Comparison of specimens reported during corresponding weeks in 1962 and 1963 in Southwestern Eradication Area. 1962 312 50,779 35 3,097 1, 1963 20 6,339 78 7,300 1964 1 238 34 6,153 Table 2. Comparison of specimens reported during corresponding weeks and in a corresponding area in 1963 in the United States-Mexico Barrier Zone.* 1963 67 1964 79 5,930 24 1,411 4,348 23 2,018 Table 2A. Mexican portion of Barrier Zone only. 1963 52 1964 79 2,057 9 236 4,103 13 891 Barrier Zone - Area in which screw-worm eradication operations are being carried out in an effort to prevent establishment of self-sustaining screw-worm popula- tion in the United States. (Anim. Dis. Erad, Div.).. Figures - Number of cases reported in infested counties for period December 6-12 â ^â ^^â¢Limits of Barrier Zone â â â â â â iiiiiijLinear 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


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