. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period April 25 - May 1, a total of 3 screw-worm cases was reported in the Southwestern Eradication Area; one case each in Jim Hogg, Brooks and Edwards Counties, TEXAS. Four cases were reported in Cochise County and one case in Santa Cruz County, ARIZONA. The Republic of Mexico reported 118 cases: Sonora 66, Chihuahua 5, Coahuila 4, Nuevo Leon 1, Tamaulipas 17, Durango 16, Veracruz 6, San Luis Potosi 2, Zacatecas 1. Sterile screw-worm flies rele
. Cooperative economic insect report. Beneficial insects; Insect pests. STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period April 25 - May 1, a total of 3 screw-worm cases was reported in the Southwestern Eradication Area; one case each in Jim Hogg, Brooks and Edwards Counties, TEXAS. Four cases were reported in Cochise County and one case in Santa Cruz County, ARIZONA. The Republic of Mexico reported 118 cases: Sonora 66, Chihuahua 5, Coahuila 4, Nuevo Leon 1, Tamaulipas 17, Durango 16, Veracruz 6, San Luis Potosi 2, Zacatecas 1. Sterile screw-worm flies released during the period: Texas 5,306,250, Arizona 1,200,000, Mexico 71,190,000. Positive Cases Negative Cases Ratio of Positive Cases to 100 Cases Negative Current Cumulative Current Cumulative Cumulative Comparison of specimens reported during corresponding weeks in 1963 and 1964 in Southwestern Eradication Area. 1963 100 650 316 2,137 30 41 1964 7 37 401 2,272 1 62 1965 3 23 228 1,498 1 53 Table 2. Comparison of specimens reported during corre sponding we eks and in a corresponding area in 1964 in the Uni ted States-Mexico Barrier Zone.* 1964 28 286 91 515 55 53 1965 Table 96 2A. 898 Mexican portion of 56 Barrier Zone 599 only. 149 91 1964 26 258 12 128 216,66 201 56 1965 93 879 36 325 270 46 * Barrier Zone - Area in which screw-worm eradication operations are being carried out in an effort to prevent establishment of self-sustaining screw- worm population in the United States. (Anim. Dis. Erad. Div.). Figures Number of cases reported in infested counties for period April 25 - May 1 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
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