. Cooperative economic insect report. Beneficial insects; Insect pests. - 443 - April 20-26, release of 19,374,400 sterile flies made covering 58,066 square miles. Release rate same as previous week. New screw-worm cases during this period numbered 1,279 of which 77 cases were in 26 new counties. New county records with number of cases for week of April 20-26 are: Crockett, Pecos, 7 each; Menard, Mason, Reagan, 6 each; Bastrop, Brewster, Fayette, Mills, 4 each; Bell, Sterling, Williamson, 3 each; Coleman, Runnels, San Saba, Schleicher, Tom Green, Travis, 2 each; and Austin, Bosque, Colorado, I
. Cooperative economic insect report. Beneficial insects; Insect pests. - 443 - April 20-26, release of 19,374,400 sterile flies made covering 58,066 square miles. Release rate same as previous week. New screw-worm cases during this period numbered 1,279 of which 77 cases were in 26 new counties. New county records with number of cases for week of April 20-26 are: Crockett, Pecos, 7 each; Menard, Mason, Reagan, 6 each; Bastrop, Brewster, Fayette, Mills, 4 each; Bell, Sterling, Williamson, 3 each; Coleman, Runnels, San Saba, Schleicher, Tom Green, Travis, 2 each; and Austin, Bosque, Colorado, Irion, Jeff Davis, Lampasas, Martin, Scurry, 1 each. (Anim. Dis. Erad. Div.).. Current infested counties New counties reported period of 4/13-26 HORN FLY (Haematobia irritans) - TEXAS - Heavy, local infestation, 700 per animal, noted on cattle in Cameron County. (Texas Coop. Rpt.; Day), OKLAHOMA - Popula- tions 25-50 per head on yearlings and cows in central and north central areas; counts 75-150 per head at location in Logan County. Activity also reported from other areas of State, with 100-150 per head in Mcintosh County. (). KANSAS - Over 200 flies counted on Angus bull in Morton County. In other south- west and south central areas of State, coimts under 1 per animal. (Peters). GEORGIA - Ranged 10-100 and averaged 30 per animal on cattle in Putnam County. (Roberts, Apr. 17). CATTLE GRUBS (Hypoderma spp.) - WASHINGTON - Ranged 4-22 on untreated beef cattle at Pullman, Whitman County. (Brannon). SHEEP KED (Melophagus ovinus) - NEW MEXICO - Troublesome in flocks in Torrance County during spring; several flocks heavily infested at shearing time. (N. M. Coop. Rpt.). MOSQUITOES - CALIFORNIA - Aedes sierrensis currently a severe problem in wooded areas. Landscaping and use of sprinklers created situations where tree holes kept wet for long periods produced 2 or 3 generations rather than usual one. Flight range limited. Currently causing severe annoyance to residents. B
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