Observations on some Mechanisms of Host Finding and Host Selection in the Simuliidae and Tabanidae (Diptera)

Abstract

<p>Observations and experimental data concerning the attraction of simuliids to carbon dioxide and odors from birds and of tabanids to carbon dioxide are presented. The role of these attractants in orientation behavior is discussed. These observations led to the development of an hypothesis of feeding behavior. The relationship be- tween attraction and host preferences is discussed.</p>