- 495 - 



ELM LEAF BEETLE ( Pyrrhalta luteola ) - UTAH - Damage moderate in parts of Duchesne 

 and Uintah Counties . (Hunsaker) . More evident in Salt Lake County. (Knowlton). 

 NEW MEXICO - Majority of Siberian elms show medium to heavy infestations and 

 extensive damage in all areas of San Juan County. (Heninger) . MAINE - Damage 

 primarily moderate in southern, western, and central areas. (Gall). 



A PHYLLOXERA ( Phylloxera caryaecaulis) - OHIO - Found for first time in Marion, 

 Stark, and Trumbull Counties. (Miller) . 



MAPLE BLADDERGALL MITE ( Vasates quadripedes ) - OHIO - Collected for first time in 

 Montgomery and Stark Counties. (Miller) . 



MAN AND ANIMALS 



SCREWWORM ( Cochliomyia hominivorax ) - Total of 4 cases reported in U.S. June 27 - 

 July 3, 197T1 TEXAS - Starr, Val Verde, Bowie; ARKANSAS - Miller. This is first 

 case reported in Arkansas since 1961. Total of 107 laboratory-confirmed cases 

 reported in portion of Barrier Zone in Republic of Mexico as follows: Sonora 4, 

 Chihuahua 24, Coahuila 9, Nuevo Leon 2, Tamaulipas 68. Total of 35 cases reported 

 in Mexico south of Barrier Zone. Barrier Zone is area where eradication operation 

 underway to prevent establishment of self-sustaining population in U.S. Sterile 

 screwworm flies released: Texas 51,178,000; Arkansas 1,390,000; Arizona 

 3,310,000; Oklahoma 80,000; Mexico 83 , 634 , 00,0,^ (Anim. Health Div.). 



CATTLE GRUBS ( Hypoderma spp.) - UTAH - Adult annoyance to cattle severe in 

 Richmond area of Cache County. (Thornley) . Cattle running near Collinston, Box 

 Elder County; annoyance general in other counties. (Knowlton). 



FACE FLY ( Musca autumnalis ) - CALIFORNIA - In Indian Valley, Plumas County, 

 and Sierra Valley^ Sierra County, increased from 7-15 per face up to 50 per 

 face. In Lake, Mendocino, and Sonoma Counties, populations decreased abruptly 

 during and following warm weather early in June. Currently, populations 

 increasing rapidly. Rain on June 26 may result in heavy populations in early 

 July. Males and females collected from livestock June 1 in Placer County by 

 J. Henderson. Determined by M. Wasbauer. Specimens taken June 2 in Santa Cruz 

 County. These are new county records. (Cal. Coop. Rpt.). UTAH - Annoyance 

 increasing, especially to horses, in Weber and Cache Counties. (Knowlton). 

 SOUTH DAKOTA - Adults 5-8 per eye on horses near Irene, northern Clay County. 

 Averaged 20 per head on untreated cattle in northern Moody County. (Kantack, 

 Balsbaugh). IOWA - Ranged 5-30 (average 14.8) per face on untreated cattle 

 herd in Story County June 30. (Iowa Ins. Sur.). WISCONSIN - Problems moderate 

 in most counties. (Wis. Ins. Sur.). MARYLAND - Adults at annoyance levels in 

 most areas in Baltimore, Howard, Carroll, Frederick, and Montgomery Counties. 

 Heaviest counts ranged 30-40 per head on cattle and horses. Control necessary 

 on all herds in central counties. (U. Md . , Ent. Dept.). 



MOSQUITOES - UTAH - Very troublesome in many parts of Cache and Rich Counties 

 (Roberts, Knowlton), in upper Skull Valley of Tooele County, southern Curlew 

 Valley of Box Elder County, and Bluff area of San Juan County (Knowlton), and 

 in much of Uintah and Duchesne Counties (Hunsaker) . WYOMING - Populations still 

 heavy and annoying along Laramie River, Albany County. (Parshall). MINNESOTA - 

 Larval collections totaled 306 during week ending June 26. Aedes vexans found 

 in 69 percent, Culex tarsalis in 4.2. Light trap catches week ending June 25 

 declined to 12,395 mosquitoes; A. vexans 79.1 percent and Coquillettidia 

 perturb ans 6.6 percent of total. Latter species will peak about July 10-12. 

 Aedes spp. in 26 fifteen-minute evening and 227 five-minute daytime bite 

 collections mainly A. vexans . Heavy rains in Minneapolis and St. Paul area 

 June 28-29 produced general hatch of A. vexans in runoff areas. Effects of this 

 brood will be noted about July 8-10. TMinn. Pest Rpt.). WISCONSIN - Biting 

 severely annoying to cattle and man in several localities. Localized problems 

 reported in Calumet, Columbia, Chippewa, Winnebago, Waushara, Waupaca, and 



