Study On The Circumscription Of Parasitic Wasps Of Some Ipidae Insects In Heilongjiang Province

In Heilongjiang Province, woods are often severely threatened by the following Ipidae insects: Ips subelongatus Motschulskyx Ips sexdentatus Boerner; Ips acuminatus Gyllenhal, Ips typographies Linnaeus and Ips duplicatus Sahlberg, etc. The parasitic wasps of Ipidae insects, being among the most important natural enemies of these beetles, have a large population and many species in the forest. So far, many wasps are also little known to science. To make clear about the specific resources of the parasitic wasps of these beetles, we studied systematically on the basis of historical researches on this subject, and gathered a lot of parasitic wasps in Daxinganling Woods and Xiaoxinganling Woods through directly collection for the parasitoid adults on the infested trees and stable spot observation by rearing parasitoid larvae and pupae in the past three years. Later, we indentified these parasitoid adults.32 species of parasitic wasps of Ipidae insects have been found in Heilongjiang Province. They belong to 2 superfamilies, 5 families and 18 genara. Of which 11 species belong to Braconidae family of Ichneumonoidea, in which 8 species (Coeloides longicaudus, Triaspis nanchaeusis, Doryctes mongolicus, D.dahuricus, Bracon ipsi, Spathius korainensis, S.yichunensis, Iphiaualx raficorpus) are reported for the first time; 4 species belong to Eurytomidae family of Chalcidoidea; 12 species belong to Pteromalidae family of Chalcidoidea; 4 species belong to Eupelmidae family of Chalcidoidea, in which 1 species (Calosota longicornis) is reported for the first time. 1 specie (Entedon longifuniculi), which is reported for the first time, belongs to Eulophidae family of Chalcidoidea. At last, we dealed with the parasitoid species" descriptions and circumscription briefly, and weaved specific identification key.The specific amount of parasitic wasps parasitizing on Ipidae insects was studied: 15 species (5 in Braconidae, 8 in Pteromalidae, 2 in Eurytomidae) on Ips acuminatus Gyllenha, 10 species (5 in Braconidae, 3 in Pteromalidae, 2 in Eurytomidae) on Ips subelongatus Motschulsky, 8 species (2 in Braconidae, 5 in Pteromalidae, 1 in Eurytomidae) on Ips typographic Linnaeus, 6 species (3 in Braconidae, 1 in Pteromalidae, 2 in Eupelmidae), 5 species (1 in Braconidae, 2 in Pteromalidae, 2 in Eupelmidae). Meanwhile, we analyzed the parasitic relations between these parasitoid and the above Ipidae insects.