Three new sawfly species of the subfamily Allantinae,Tenthredinidae are described from Henan Province,China,Ametastegia acutitheca Wei,sp.nov.,A.rufotegularis Wei,sp.nov.and Taxonus liui Wei et Niu,sp.nov.Type specimens of the new species are kept in the Insect Collection of Central South University of Forestry and T...