Study Of Taxonomy On The Grylloidea In Jilin Province

Grylloidea belong to Ensifera,Orthoptera,Insecta. There are about 4000 species inGrylloidea worldwide and about 230 species(subspecies) from China.In this paper,the taxonomy researches among Grylloidea insects of Jilin.We collected 10species of crickets which belong to 3 families,8 genera,described their morphologicalcharacteristics respectively,and the taxonomic studies on Grylloidea from two kinds ofmicrostructure．1.MorphologyIn this part,10 species of crickets were described using the traditional classificationMethods．We use the classification system that Liu and Yin brought up in 1995．AccordingLiu and Yin(1995) recorded and collected(2009-2010)in person,the results are as follows．1.1 TrigonidiidaeNemobiinae1.1.1 Dianemobius Vickery 1973(1)Dianemobius fascipes (Walker1869)1.1.2 Polionemobius Gorochov 1983(2)Polionemobius taprobanensis (Walker 1869)1.1.3 Pteronemobius Jacobson et Bianchi 1905(3)Pteronemobius gifuensis (Shiraki 1911)(4)Pteronemobius concolor (Walker 1871)(5)Pteronemobius neimongolensis Kang et Mao19901.2 Gryllidae1.2.1 Nigrogryllus Gorochov 1983(6)Nigrogryllus sibiricus (Chopard 1925)1.2.2 Gryllodes Saussure 1874(7)Gryllodes sigillatus (Walker 1869)(8)Gryllodes supplicans (Walker 1859)1.2.3 Teleogryllus Chopard 1961(9)Teleogryllus infernalis (Saussure 1877)(10)Teleogryllus occipitalis (Serville 1838)(11)Teleogryllus emma(Ohmachi et Matsumura 1951)1.2.4 Velarifictorus Randell 1964(12)Velarifictorus micado (Saussure 1877)1.3 OecanthidaeOecanthus Audinet-Serville 1831 (13)Oecanthus longicauda Matsumura 19042 AnatomyIn this part,the alimentary canals of 10 species of crickets were analyzed by using theexternal anatomy and scanning electron microscope,and clustering analysis of these 10species was studied based on their lengths of foregut,midgut,hindgut,crop,proventriculusand gastric caeca,the results are as follows．(1)The alimentary canals include three parts:foregut,midgut and hindgut．The significantdifferences among different species are the lengths of foregut,midgut and hindgut andinternal feature of the crop,proventriculus．(2)There are some differences about the lengths of foregut,midgut and hindgut betweendifferent families,different genera．Obviously differences about inner morphologicalcharacters of crops and proventriculus between different species．They play important role intaxonomy researches．(3)There is closely relationship between morphological characters of alimentary canalsand feeding habits．The studies can supply basic data for feeding habit researches．(4)The results of clustering analysis are consistent with those of morphologicalclassification．Trigonidiidae species and Oecanthidae species clustered with each other,andthen clustered with Gryllidae species．3 Stridulatory organs and surface structure of forewingIn this part,Stridulatory organs and surface structure of forewing of 10 species of cricketswere analyzed by using the scanning electron microscope,and clustering analysis of these 10species was studied based on their lengths of teech,stridulating files and the width of adjacentteech,the results are as follows．(1)The file teech of crickets showed obvious differences between different species．Theyare reliable taxonomy charaeters．Plectrum is less important in the taxonomy．(2)filuses around the proalas showed differences in different families and hexagons offorewing showed differences in different families,most genera. Both them are important totaxonomy．(3)The results of clustering analysis are consistent with those of morphologicalclassification and anatomy．Trigonidiidae species and Oecanthidae species clustered with eachother,and then clustered with Gryllidae species．In this study,the results in both of microstructure aspects are in line with those ofmorphological classification, the evolution of them are parallel with that of morphology．Andthe results of clustering analysis show Trigonidiidae species are closely related to Oecanthidaespecies,and are distantly related to Gryllidae species．SEM could be used as a criterion for theidentification of the related species．...