Figure 5

Details of the intermediate organ and crista acustica homolog in the foreleg. (a) Lateral view of the complex tibial organ. The distinct nerves innervating the intermediate organ and the crista acustica homolog are indicated by arrows. (b) Lateral view of the intermediate organ in the foreleg (bi) and hindleg (bii). (c) Lateral view of the crista acustica homolog in foreleg (ci) and hindleg (cii) showing the linear arrangement of somata. Dendrites of the distal CAH sensilla bend steeply dorsally (white arrows). The IO and CAH sensilla are attached to a triangular mass of connective tissue and attachment cells (white arrowheads) which tapers dorsally (black arrowheads) and is attached to the anterior cuticle along its entire length. Abbreviation: CAH, crista acustica homolog; IO, intermediate organ; SGO, subgenual organ; T1, foreleg; T3, hindleg. Scale: (a) =100 µm; (b), (c) =50 µm.