ANTS OF JIANFENGLING FOREST REGION IN HAINAN PROVINCE (HYMENOPTERA: FORMICIDAE) A NEW SAWFLY INJURIOUS TO CHERRY FROM CHINA(Hymenoptera:Tenthredinidae) ANATOMY OF INTERNAL REPRODUCTIVE SYSTEM OF CHOUIOIA CUNEA(HYMENOPTERA,CHALCIDOIDEA: EULOPHIDAE) A NEW SPECIES OF AGENOCIMBEX (HYMENOPTERA:CIMBICIDAE) FROM GANSU, CHINA Ant Communities from East Slope of Mount Demola to Zayu Valley in Southeastern Tibet Competition among parasitoids for host during foraging and oviposition Ecological mechanisms and prospects for utilization of toxins from parasitic hymenopteran An Analysis on the Ant Fauna of the Nangun River Nature Reserve in Yunnan, China A NEW SPECIES OF THE GENUS SCAMBUS(HYMENOPTERA:ICHNEUMONIDAE,PIMPLINAE) A NEW SPECIES OF THE ANT GENUS ACROPYGA ROGER (HYMENOPTERA:FORMICIDAE) OF CHINA A NEW SPECIES OF HETERARTHRINAE FROM CHINA (Hymenoptera, Symphyta, Tenthredinidae) A New Species of Acantholyda Costa (Hymenoptera, Pamphiliidae) from China A NEW SPECIES OF THE GENUS DIAPARSIS (HYMENOPTERA: ICHNEUMONIDAE) PARASITIZING LEMA DECEMPUNCTATA WITH A NEW RECORD FROM CHINA EGG PARASITIC WASPS OF LARCH CATERPILLAR IN DAXINGANLING MTS. WITH DESCRIPTION OF A NEW SPECIES A TAXONOMIC STUDY ON THE GENUS TETRAPONERA SMITH IN CHINA (HYMENOPTERA:FORMICIDAE) A New Species of the Genus Cephalcia (Hymenoptera:Pamphiliidae) from China A New Species of the Genus Megabeleses from China (Hymenoptera, Tenthredinidae) Two New Species of Sawflies from China (Hymenoptera,Tenthredinidae) Taxonomic Studies on the Genus Polyrhachis Mayr of China (Hymenoptcra.Formicidae TAXONOMIC STUDIES ON THE GENUS FORMICA L. OF CHINA (HYMENOPTERA:FORMICIDAE) Two New Sawflies of the Genus Gilpinia in China (Hymenoptera, Symphyta, Diprionidae) A New Species of the Genus Diprion(Hymenoptera:Diprionidae) from China TAXONOMIC STUDIES ON THE GENUS TETRAMORIUM MAYR IN CHINA (HYMENOPTERA,FORMICIDAE) FOUR NEW SPECIES OF SAWFLIES FROM CHINA (HYMENOPTERA,SYMPHYTA:PAMPHILIIDAE,TENTHREDINIDAE) A New Record of The Genus Neurotoma (Hymenoptera,Pamphiliidae) to China A New Species of the Genus Nematus(Hymenoptera:Tenthredinidae)from China A NEW SPECIES OF THE GENUS BATHYTHRIX PARASITIZING PACHYNEMATUS ITOI FROM CHINA (HYMENOPTERA, ICHNEUMONIDAE,TENTHREDINIDAE)