. Cooperative economic insect report. Beneficial insects; Insect pests. - 31 - INSECTS AFFECTING MAN AND ANIMALS STATUS OF THE SCREW-WORM (Cochliomyia homlnivorax) IN THE SOUTHWEST On several days during the previous period (December 23-29), adverse weather conditions prevented release of all sterile flies produced. When these flies were added to those produced during the current period (December 30, 1962, through January 5, 1963), it allowed for the release of the largest number of sterile flies since the beginning of eradication efforts. Although screw-worm populations have continued to decr
. Cooperative economic insect report. Beneficial insects; Insect pests. - 31 - INSECTS AFFECTING MAN AND ANIMALS STATUS OF THE SCREW-WORM (Cochliomyia homlnivorax) IN THE SOUTHWEST On several days during the previous period (December 23-29), adverse weather conditions prevented release of all sterile flies produced. When these flies were added to those produced during the current period (December 30, 1962, through January 5, 1963), it allowed for the release of the largest number of sterile flies since the beginning of eradication efforts. Although screw-worm populations have continued to decrease, infestations are still being disclosed in the sheep and goat country on the Edwards Plateau. A small population con- tinues along river valleys near Houston. Fly release has been extended to this area to eliminate infestations. The barrier is being gradually lengthened along the Rio Grande Valley, northwest of Preside. A total of 102,453,850 sterile flies was released during the period December 30, 1962, through January 5, 1963, and a total of 53 screw-worm cases was reported during the same period. (Anim. Dis. Erad. Div.).. Figures - Number of cases reported in infested counties for period Dec. 30, 1962, through Jan. 5, 1963 â â â â â â â I - Lineage drop along river valleys â â'^ ^ - Drop area COMMON CATTLE GRUB (Hypoderma lineatum) - ARKANSAS - Total of 866 grubs counted on 89 untreated animals checked in Franklin County, northwest. Ranged 0-119 and averaged per animal, (Ark. Ins. Sur.). OKLAHOMA - Ranged 0-39 per head (averaged 12) on long yearling steers in Stillwater area, Payne County. (Okla. Coop. Sur.). SHEEP KED (Melophagus ovinus) - UTAH - Numbers moderate on farm flock near Ephraim, Sanpete County"^ (Knowlton) . SHEEP BITING LOUSE (Bovicola ovis) - WISCONSIN - An apparently low population of this pest revealed by examination of sheep in Dodge, Dunn, Grant, Sheboygan and Taylor Counties. (Wis. Ins. Sur.).. Please note that these images are ext
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