Phonotaxis in Gryllus campestris L. (Orthoptera, Gryllidae). 2. Acoustic orientation of female crickets after occlusion of single sound entrances

One of the four sound entrances (two posterior tympana and two prothoracic spiracles) of the auditory system of female field crickets (G. campestris L.) was occluded with wax. After single occlusions and in the absence of external directional stimuli the crickets behave like intact unorientated animals: they do not walk in any consistent direction. With calling song presentation, occlusions of one sound entrance (tympanum or spiracle) result in course deviations to the intact side.