. Cooperative economic insect report. Beneficial insects; Insect pests. 70 STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period January 23-29 the only case reported in the Southwestern Eradica- tion area was in Webb County, TEXAS. The Republic of Mexico reported 48 cases as follows by State: Chihuahua 2, Sonora 11, Coahuila 2, Tamaulipas 14, Nuevo Leon 1, Territorio sur de Baja California 18. Sterile screw-worm flies released: Texas 11,486,250, Mexico 71,420,000. Positive Cases Negative Cases Ratio of Positive Cases to 100 Cases Negative Year Cumulative Current
. Cooperative economic insect report. Beneficial insects; Insect pests. 70 STATUS OF THE SCREW-WORM (Cochliomyia hominivorax) IN THE SOUTHWEST During the period January 23-29 the only case reported in the Southwestern Eradica- tion area was in Webb County, TEXAS. The Republic of Mexico reported 48 cases as follows by State: Chihuahua 2, Sonora 11, Coahuila 2, Tamaulipas 14, Nuevo Leon 1, Territorio sur de Baja California 18. Sterile screw-worm flies released: Texas 11,486,250, Mexico 71,420,000. Positive Cases Negative Cases Ratio of Positive Cases to 100 Cases Negative Year Cumulative Current Cumulative Current Cumulative Table 1. Comparison of specimens reported during corresponding week in 1964 and 1965 in Southwestern Eradication Area. (1966 area figures include cases reported from Arizona and/or California; 1965 figures reflect those from the 5-State area). 1964 0 1965 1 1966 1 Tabl 3 2. 1965 24 1966 49 23 131 54 287 1 108 0 Comparison of specimens reported during corresponding week and in a corresponding area in 1965 in the United States-Mexico Barrier Zone.* 220 295 32 19 168 89 Feasibility Survey - During this period 204 cases were identified in Mexico south of the Barrier Zone as follows: Nayarit 15, Veracruz 44, Jalisco 8, Guanajuato 5, Yucatan 35, Michoacan 6, Campeche 4, Sinaloa 8, Morelos 2, Chiapas 27, Tabasco 19, Puebla 13, Colima 1, Guerrero 8, Oaxaca 5, San Luis Potosi 3, Durango 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- tions in the United States. (Anim. Health Div.).. Figures - Number of cases reported in infested counties for period Jan. 23-29. """"""" Grid Release Boundary. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these
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