A Cladistic Analysis on the Genera of Tinginae (Hemiptera:Heteroptera:Tingidae) from Northern China

In the present paper,the cladistics method is used to analyze the phylogenetic relationship of 16 genera of Tinginae (Hemiptera:Heteroptera:Tingidae) from northern China.33 characters with 88 states were chosen based on the morphological comparison.The character matrix was formed through ingroup and outgroup analysis and computed using the computer programs MacClad (version 3.0.1),AutoDecay (version 3.0),PAUP (version 3.1.1) and Hennig 86 (version 1.5),and the same most parsimonious tree and Nelson consensus cladogram were obtained from both computation to explain the phylogenetic relationship among the genera (L=118,CI=0.454,RI=0.529).We categorized these genera involved in the analysis phylogenetically into 6 groups according to the results.They are Agramma group,Leptoypha group,Dictyla group,Catoplatus group,Physatocheila group and Derephysia group.The phylogenetic relationship among the involved genera is presented as(((((Derephysia group=(Lasiacantha,(Acalypta,(Galeatus,(Dictyonota,(Derephysia,Sphaerista))))),Physatocheila group =((Elasmotropis,Tingis),((Oncochila,Cochlochila),Physatocheila))),Catoplatus group=Catoplatus),Dictyla group=(Monosteira,Dictyla)),Leptoypha group=Leptoypha),Agramma group=Agramma).These groups will not be regarded as higher classific taxa until more genera and data are available and further analysis are carried out.