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Show Blood-Sucking. Utah Diptera' By G. F. KNOWLTON, F. C. HARMSTON and D. E. HARDY2 Mosquitoes of several species have been found capable of transmitting equine encephalomyelitis from diseased to healthy animals under experimental conditions. from The outbreaks of this disease of horses. which occurred in Utah recurred in 1937, emphasized the need of further 19. to 1935, and the knowledge concerning species and seasonal insects occurring in all parts of Utah. occurrence of blood-sucking Family CULICIDAE-The Mosquitoes Aedes campestris (D. & K.). Lampo, October 28, 1933; Salt Lake City. A. dorsalis Mg. Arnalga, September 10, 1935; Appledale ; Blue Creek; Cache Junction; Corinne; Du chesne; Farmington; Howell: Huntington; I 0 s epa; Lampo; Logan; Magna; Nafton; Oakley; Penrose; Peoa; Richfield; Salt Lake City; Snowville; Thomp sons ; Woods Cross ; Woodruff, This is a native July 5, 1935. mosquito, found to be capable of transmitting equine encephalomy elitis from diseased to healthy guinea pigs. A. idahoensis Theo. Laketown, July 5, 1935; Woodruff. A nigromaculis (Ludl.). Amalga, September 10, 1935; Bear River City; Corinne; Green River; Rich field, 1937. A vicious biter, capa ble of transmitting equine en cephalomyelitis from diseased to healthy guinea pigs. A. niphadopsis (Dyar ). Providence, April 25, 1936; Vernon. A. vexans (Mg.). Fig. 1. Adult female Simulium Farmington, Sep vittatum Zett. temper 28, 1933; Jordan Narrows. Anopheles maculipennis (Mg.). Ap pledale, October 27, 1933; Logan; Penrose. Culex tarsalis COq. Clinton, June 25, 1936; Jordan Narrows; Logan; Ogden, September 20, 1935; Providence. Theobaldia incidens (Thomas). Benson, July 1, 1935; Jordan Narrows; Logan; Providence; Smithfield. . 2 Contribution from the Department of Entomology, Utah Agricultural Experiment Station. Associate entomologist and research assistants, respectively. The writers are indebted to Dr. A. Stone, Dr. C. B. Philips, C. R. Twinn, and L. L. Pechuman for identifying most of the material herein reported, and to Dr. V. M. Tanner for the loan of several specimens of Tabanidae from the Brigham Young University insect collection. Unless otherwise indicated, collections were made in Utah by one or more of the writers. 103 |