The Study Of Songs And Stridulatory Organs Of Some Katydids Species

Katydid can represent as one of the sound insect. In general, thesurvival of the ecological environment of Katydid is in the bushes,grass.Some small number of species habitat in the trees. Theintraspecific communication mainly rely on calling sound.Voicecommunications as the basis capabilities for many of their lifeactivities.Male’s song are very attractive to the same kind of females.The calling sound of male can induce the females fast motiondirection toward male of being song. The sound signal can be used tokill the female katydid.Katydid’s song has a kind of specificity.Katydid also exist a widerange of stridulatory organs.Research katydid song features andstridulatory organs structure for identifying sibling species, closelyrelated species, and research katydid origin of species,provide areliable basis for evolutionary.This thesis research about Zhejiang, Yunnan, dongbei, Sichuanand Shanxi seven subfamilies,15genera,33kinds of stridulatoryorgans and calling song of male katydids, and according to thestructure of stridulatory organs and the vocal mechanism, afterconclusion drawn the following conclusions: (1) The friction mechanism of stridulatory organs of Katydiddivided into four modes. In this paper, Rhomboptera ligata (Brunner-Wattenwyl,1895) belongs to resonance mode with the sound of samepulse waveforms of crickets. There are24species belonging to tworesonance modes2. The scraper use of two different mechanisms offriction: rolling friction and elastic potential energy, resulting in adifferent song easy to distinguish between species.In which fourkinds of katydids belong to noise type song mechanisms.(2) The sound file of male Katydid are strip, bending the sound fileare different.The number of teeth on the sound file, shape andarrangement of teeth on the sound file of each species has thedifference.The sound file and the teeth of the same genus are similar.The teeth of Gampsocleis in sound file end are small and toothdistances narrow spacing, but in the central are large and widelytooth distances.The diverse species have a big difference in thesound file. The sound file of Hexacentrus japonicus Karny is not aplane, and the sound tooth size, arranged in different ways. The endssound file of ph.gracilis has a approximately60°twist,about a dozensound tooth in it.In the the corner of file again turning30°,alsoabout a dozen sound tooth in it. The end of tooth in the final sound fileon a flat surface with the most tooth. The end of sound file ofDucetia japonica (Thunberg,1815) are deformation and length-widthratio becomes smaller.(3) The mirror of male Katydid are uneven. The mirror ofConocephalus is relatively thin and observed under thestereomicroscope more translucent. In Gampsocleis, mirror aresimilar to the case of a square, and close to the base of mirror a cross vein to separate two part of it.The mirror of Sinochlora,Ruidocollaris and Phyllomimus is very thick and not transparent.Onthe mirror,it has textured and mirror membrane area is not obvious.The mirror of Sinocyrtaspis brachycercus Chang, Bian&Shi，2012isrelatively thick the mirror membrane area more obvious, there is across-veins protruding out of the mirror membrane area will bedivided.The mirror of Mecopoda niponensis (Haan,1842) are irregularand not translucent.