Chordotonal organs associated with the sound producing apparatus of cicadas (Insecta, Homoptera)

摘要: 1. There are three connective chordotonal organs associated with the sound producing apparatus of cicadas: a) tymbal organ, connected to lower anterior margin tymbal; b) tensor special protuberance bearing origin muscle; c) detensor cuticle near inner tympanum, beneath tympani muscle. 2. A newly described muscle, accessory originates next proximal attachment organ and inserts alongside insertion muscle. 3. These contain an exceptionally large number sensillae: 650–1300 scolopidia; 200–350 325–400 scolopidia. 4. Each scolopidium consists following cells: a bipolar neuron dendrite sensory cilium, scolopale cell, distal cell. Scattered Schwann cells surround axons. 5. The has usual fine structure but features distinctive: is composed continuous tube material, not separate rods; material varies markedly in thickness different regions scolopale; extracellular cap, which anchors cilium distally, very small entirely surrounded by scolopale. 6. From morphological evidence, it suggested that these provide sensitive monitoring system for activity apparatus.