Abstract: This research investigated the mating behavior of the horn fly in laboratory studies and examined the role of selected semiochemicals in mating behavior. Dissertation Discovery Company and the University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "The Role of Semiochemicals in the Behavior of the Horn Fly Haematobia Irritans (L.) (Diptera: Muscidae)" by Herbert Thomas Bolton, was obtained from the University of Florida and is being sold with permission from the author. A free digital copy of this work may also be found in the university's institutional repository, the IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.