- 533 - 



Calumet, Brown, and Adams Counties. (Wis. Ins. Sur.). WYOMING - Ranged 10-40 per 

 side on cattle west of Laramie, Albany County. (Spackman, Lloyd). TEXAS - In 

 Jefferson County, Aedes sollicitans and A. vexans found in large numbers during 

 June in Spindletop Park area. Psorophora confinnis populations decreased in 

 western Beaumont; P. ciliata occurred in low numbers. Culex pipiens quinque - 

 f asciatus occurred throughout county. (Thompson) . Mosquito activity very low in 

 Harris County during May; adults averaged 3.5 per trap per night. (Bartnett) . 



HORN FLY ( Haematobia irritans ) - IDAHO - Abundant on untreated pastured cattle in 

 several northern areas. Herd averages of 125 per animal side common. Herd averages 

 up to 200+ per animal observed. (O'Keeffe) . NEBRASKA - Counts of 500+ per head of 

 untreated range cattle in McPherson, Lincoln, Keith, and Arthur Counties. 

 (Campbell). WISCONSIN - Moderate on cattle in most areas except St. Croix County 

 where problem severe. Annoyance apparently severe on some herds in Dane, La Crosse, 

 and Vernon Counties July 13. (Wis. Ins. Sur.). ILLINOIS - Decreased slightly on 

 pastured cattle past 2 weeks. Currently 50-90 per animal. (111. Ins. Rpt.). OHIO - 

 Adults 75-500+ on cattle in Noble County. (Pratt). MARYLAND -Counts below high 

 levels of last 3 years in most areas. Ranged 0-20 per head in Baltimore, Frederick, 

 and Carroll Counties. (U. Md . , Ent. Dept.). FLORIDA - Averaged 36 per dairy cow 

 checked near Gainesville, Alachua County. Determined by E. Head. (Fla. Coop. Sur.). 

 MISSISSIPPI - Average per animal by county: Monroe 100, Montgomery 100, Tishomingo 

 17, Holmes 260, Hinds 18. Total of 1,815 head checked. (Sartor). TEXAS - Increase 

 noted throughout south-central and coastal areas. Populations in northern pan- 

 handle counties remain constant due to hot, dry weather. (Cole, Clymer) . OKLAHOMA - 

 Ranged 300-800 per head on cattle in Delaware County, 200-500 in Payne County. 

 Moderate to heavy in Hughes, Cleveland, and Cotton Counties. (Okla . Coop. Sur.). 



STABLE FLY ( Stomoxys calcitrans) OKLAHOMA - Averaged 2 per head on untreated dairy 

 cattle in Payne County^ (Okla. ^Coop . Sur.). NEBRASKA - This species and Musca 

 domestica (house fly) averaged 10-14 per Scudder grid in feedlots in Lincoln and 

 Keith Counties. Stable fly 10-15 per leg. (Campbell). IOWA - S. calcitrans 

 decreased to 0-6 (average 2.7) per leg on untreated cow herd in Story County. 

 (Iowa Ins. Sur.). WISCONSIN - Light to moderate in most areas except Calumet 

 County where severe annoyance to cattle evident. (Wis. Ins. Sur.). 



TABANID FLIES - NEVADA - Apatolestes comas tes willistoni collected at Rosebud, 

 Pershing County, for a new county record . fBechtel, Martinelli)-. UTAH - Chrysops 

 discalis annoying livestock and man in western Davis County (Judd) ; this species 

 and Tabanus spp. annoying horses in Box Elder County, and T_. punctifer and C. 

 C. discalis annoying horses and livestock at Snowville, Collinston, and Deweyville. 

 Hybomi tra sonomensis and C_. aestuans abundant in Locomotive Springs area. 

 (Knowlton) . NEW MEXICO - Chrysops spp, very abundant and annoying to man and 

 animals in Chama and Tierra Amarillo area of Rio Arriba County. (Heninger) . 

 OKLAHOMA - Tabanus spp. averaged 4 per head oa Payne County cattle, (Okla. Coop. 

 Sur.) . 



AMERICAN DOG TICK ( Dermacentor variabilis ) - WEST VIRGINIA - Adults collected on 

 corn by J.N. Angotti and J. Lew in Lewis County July 14, 1971. This is a new 

 county record. (W. Va . Ins. Sur.). 



BENEFICIAL INSECTS 



SYRPHID FLIES - IDAHO - Common in wheat infested with English grain aphid at 

 Coeur d'Alene, Kootenai County. (Stranahan) . WASHINGTON - Larvae unusually numerous 

 in eastern area, particularly in wheat and related cereals. Reported heaviest in 

 Grant, Adams, and Spokane Counties. (Kulp et al.). 



