William R. Yarnell, zaru@uwyo.edu¹, John E. Lloyd, lloyd@uwyo.edu², Rabinder Kumar, kumar@uwyo.edu², Edward T. Schmidtmann, eschm@uwyo.edu¹, Dennis Grubbs, grubworm1@hotmail.com³, and Keith Wardlaw, kwardlaw@ci.laramie.wy.us⁴. (1) Arthropod-Borne Animal Diseases Research Laboratory, USDA, ARS, 1000 E. University Ave, University of Wyoming, Laramie, WY, (2) University of Wyoming, Renewable Resources, College of Agriculture, Agriculture Building, Laramie, WY, (3) City of Torrington, P.O. Box 250, Torrington, WY, (4) City of Laramie, Mosquito Control Division, P.O. Box C, Laramie, WY