A taxonomic study of Ooctonus (Hymenoptera, Mymaridae) from Heilongjiang, China.

Five species of Ooctonus Haliday (Hymenoptera, Mymaridae) from Heilongjiang Province, China, are reviewed. One species, Ooctonushuberi sp. n., is described as new, and four species, Ooctonusorientalis Doutt, Ooctonussaturn Triapitsyn, Ooctonussublaevis Förster and Ooctonusvulgatus Haliday are reported as new to China. A key to the females of the 10 described Chinese species is given. All the specimens are deposited in the insect collections of Northeast Forestry University, China.