. Cooperative economic insect report. Insect pests Control United States Periodicals. - 1121 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period September 20-26, TEXAS reported the first infestation of screw-worm since early August with one case in Briscoe County. ARIZONA, 5 cases reported: Cochise (2), Santa Cruz (2) and Graham (1). No cases in NEW MEXICO. Republic of Mexico reported 386 infestations: Veracruz (1), Nuevo Leon (6), Chihuahua (161), Sonora (161), Zacatecas (2), Puebla (2), Durango (32), Tamaulipas (11) and Coahuila (10). Sterile screw-worm fl
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 1121 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period September 20-26, TEXAS reported the first infestation of screw-worm since early August with one case in Briscoe County. ARIZONA, 5 cases reported: Cochise (2), Santa Cruz (2) and Graham (1). No cases in NEW MEXICO. Republic of Mexico reported 386 infestations: Veracruz (1), Nuevo Leon (6), Chihuahua (161), Sonora (161), Zacatecas (2), Puebla (2), Durango (32), Tamaulipas (11) and Coahuila (10). Sterile screw-worm flies released: Texas 12,682,250; New Mexico 500,000; Arizona 7,860,000; Republic of Mexico 61,343,200. 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 1,343 38,181 33 2,405 4, 1, 1963 349 3,321 148 5,167 1964 1 109 94 4,581 Table 2. Comparison of specimens reported during corresponding weeks and in a corresponding area in 1963 in the United States-Mexico Barrier Zone.* 1963 372 3,300 22 1,058 1, 1964 354 2,524 45 1,524 Table 2A, Mexican portion of Barrier Zone only, 1963 76 1,075 3 148 2, 1964 349 2,300 22 701 1, 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.).. 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 Sta
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