...T. G. Forrest; M. P. Read; H. E. Farris; R. R. Hoy ABSTRACT We describe the paired hearing organ of the scarab beetle Euetheola humilis . The auditory structures of the beetle are typical of other insect ears in that they have a thinned tympanic membrane backed by a tracheal airsac with associated...

...T. G. Forrest; H. E. Farris; R. R. Hoy ABSTRACT We discovered an auditory sense in a night-flying scarab beetle, Euetheola humilis , the first scarab to be shown to hear airborne sounds. In the field, beetles were captured beneath speakers broadcasting ultrasound that simulated bat echolocation...