. Cooperative economic insect report. Insect pests Control United States Periodicals. - 1214 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period October 25 - 31, TEXAS reported 12 screw-worm infestations from 11 counties: Starr 1, Zapata 1, Webb 2, Trio 1, Gillespie 1, Hays 1, Travis 1, Milam 1, Lampasas 1, McLennan 1, and Henderson 1. ARIZONA reported 13 cases from 5 counties: Cochise 5, Santa Cruz 2, Pima 2, Graham 1 and Pinal 3. No cases were reported from NEW MEXICO. Republic of Mexico reported 291 cases: Sonora 117, Chihuahua 97, Tamaulipas 20, Coahuila
. Cooperative economic insect report. Insect pests Control United States Periodicals. - 1214 - STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period October 25 - 31, TEXAS reported 12 screw-worm infestations from 11 counties: Starr 1, Zapata 1, Webb 2, Trio 1, Gillespie 1, Hays 1, Travis 1, Milam 1, Lampasas 1, McLennan 1, and Henderson 1. ARIZONA reported 13 cases from 5 counties: Cochise 5, Santa Cruz 2, Pima 2, Graham 1 and Pinal 3. No cases were reported from NEW MEXICO. Republic of Mexico reported 291 cases: Sonora 117, Chihuahua 97, Tamaulipas 20, Coahuila 20, Durango 18, Nuevo Leon 8, Veracruz 8, San Luis Potosi 2 and Puebla 1. Sterile screw-worm flies released: Texas 17,690,250, Arizona 6,794,000, New Mexico 1,616,000 and Mexico 55,935,200. 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 1963 1964 1,475 369 12 47,487 5,525 164 114 299 173 2,777 6,277 5,268 1, 1, Table 2. Comparison of specimens reported during corresponding weeks and in a corresponding area in 1963 in the United States-Mexico Barrier Zone.* 1963 1964 281 276 5,085 3,562 37 46 1,242 1,711 Table 2A. Mexican portion of Barrier Zone only. 1963 1964 65 262 1,551 3,362 0 13 155 762 2, 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.),. Figures - Number of cases reported \ in infested counties for period October 25 - 31 — • — ••Limits of Barrier Zone Linear drop along river valleys. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readabil
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