The genus Ussurohelcon Belokobylskij (Hymenoptera, Braconidae, Helconinae) in Vietnam, with descriptions of six new species

The genus <i>Ussurohelcon</i> Belokobylskij is recorded for the first time from Vietnam with six new species described and fully illustrated: <i>Ussurohelcon hatinh</i> Long, <b>sp. nov</b>., <i>U. hagiang</i> Long, <b>sp. nov</b>., <i>U. mellicentralis</i> Long, <b>sp. nov</b>., <i>U. mocchau</i> Long & van Achterberg, <b>sp. nov</b>., <i>U. similis</i> Long, <b>sp. nov</b>. and <i>U. tuyenquang</i> Long, <b>sp. nov</b>. Comparative morphological characters of <i>Ussurohelcon</i> species are discussed and a key to Oriental species is also provided.