title: Distal lobe of the pilifer: an ultrasonic receptor in choerocampine hawkmoths.
abstract: Evidence is presented for a novel mechanism mediating the auditory sense in the Choerocampinae (Lepidoptera: Sphingidae). Vibrations in the scale-free medial wall of the enlarged labial palp segment are transmitted by contact to the distal lobe of the pilifer, a derivative of the labrum, and are there transduced into afferent impulses in the labral nerve.
authors.forename: K D
authors.initials: KD
authors.lastname: Roeder
authors.forename: A E
authors.initials: AE
authors.lastname: Treat
authors.forename: J S
authors.initials: JS
authors.lastname: Vande Berg