Review of the genus Eusterinx Förster, 1869 (Hymenoptera: Ichneumonidae: Orthocentrinae) with descriptions of five new species from South Korea

South Korean species of the genus Eusterinx Förster are reviewed here. Nine species of the genus Eusterinx are found to occur in South Korea, and five species, Eusterinx (E.) elongata sp. nov. , E. (Holomeristus) hirtis sp. nov. , E. (Ischyracis) fulvipes sp. nov. , E. (I.) petiolata sp. nov. and E. (I.) rufithorax sp. nov. , are described. Four more species of Eusterinx from subgenera Divinatrix, Eusterinx and Holomeristus are recorded from South Korea for the first time. Hitherto, unknown male of the Eastern Palaearctic species E. (Divinatrix) kurilensis Humala is described. A key to all known species of the genus Eusterinx occurring in South Korea is provided.     

A review of the genera Gnathochorisis F?rster and Symplecis F?rster of South Korea,with notes on Korean orthocentrines (Hymenoptera,Ichneumonidae, Orthocentrinae)

Two genera of Korean Orthocentrinae, Gnathochorisis and Symplecis, are reviewed, and keys to species of these genera are provided here. Two new species, Gnathochorisis fuscipes Humala & Lee, sp. n. and Gnathochorisis koreensis Humala & Lee, sp. n. are described from South Korea. The current state of the taxonomy of Eastern Palaearctic orthocentrines is briefly discussed.     

The cladistics and higher classification of the Pimpliformes (Hymenoptera: Ichneumonidae)

The monophyly of the ichneumonid clade Pimpliformes is established and the phylogenetic relationships of the eight component subfamilies are resolved. The clade (Acaenitinae + (Diacritinae + (Cylloceriinae + (Diplazontinae + Orthocentrinae)))) is the sister-lineage to the clade (Pimplinae + (Rhyssinae + Poemeniinae)). The Nearctic genus Cressonia Dasch is transferred to the Diacritinae from the Orthocentrinae. Tribes are not recognized in the Acaenitinae as the Coleocentrini (sensu Townes, 1971) is paraphyletic with respect to the Acaenitini. The Cylloceriinae is recognized as comprising three genera, Cylloceria Schiødte, Allomacrus Förster and Sweaterella gen.n. The Orthocentrinae, including the Helictinae of authors, is shown to be monophyletic, but the latter is clearly shown to be paraphyletic if the Orthocentrus genus-group is excluded. The Pimplinae comprises four monophyletic tribes: the Delomeristini, consisting of Delomerista Förster and Atractogaster Kriechbaumer; the Perithoini trib.n., which includes only Perithous Holmgren (= Hybomischos Baltazar syn.n.); the Pimplini, which includes the Theronia genus-group as well as the Pimpla genus-group; and the Ephialtini, which includes the Polysphinctini syn.n., a monophyletic group that previously rendered the restricted Ephialtini paraphyletic. The tribe Delomeristini is the sister-group to the clade (Ephialtini + (Perithoini + Pimplini)). The subfamily Poemeniinae is recognized as comprising three tribes: the Pseudorhyssini (trib.n.) which includes the single Holarctic genus Pseudorhyssa Merrill; the Rodrigamini (trib.n.) which includes only the Costa Rican genus Rodrigama Gauld; and the Poemeniini. The tribe Pseudorhyssini is the sister-group to the clade (Rodrigamini + Poemeniini). The phylogenetic inter-relationships of the genera of Poemeniini are resolved. A new genus from South Africa, Guptella (gen.n.) is described, and Achorocephalus Kriechbaumer is shown to be a synonym of Eugalta Cameron (syn.n.). The evolution of biological traits within the Pimpliformes is discussed with reference to the elucidated phylogeny, and zoogeographic patterns are outlined.     

A taxonomic review of Korean Hydroglyphus Motschulsky (Coleoptera: Dytiscidae: Hydroporinae) with a description of new species

A taxonomic study of Hydroglyphus Motschulsky in Korea is presented. Four species are recognized including a new species, Hydroglyphus coreanus sp. nov. Hydroglyphus flammulatus (Sharp) is reported for the first time in the Korean peninsula and H. geminus (Fabricius) is a new addition to the South Korean fauna. Habitus and SEM photographs, distribution maps, and key to the Korean species are provided.     

Revision of the family Sphecidae (Hymenoptera: Apoidea) in South Korea

Korean species of the family Sphecidae are reviewed, and seventeen species in nine genera belonging to three subfamilies are confirmed. Among them, Ammophila campestris and Sceliphron caementarium are new to South Korea. Korean occurrence of Sceliphron madraspatanum is confirmed with an actual Korean specimen. This paper provides the first determination keys to higher taxa and species occurring in South Korea. Taxonomic information of each species including original publication of valid name and justifiable references for Korean occurrence is provided. Digital images and line drawings for selective characteristics are also available.     

Study on two genera,Yasumatsua Togashi and Aproceros Malaise (Hymenoptera: Argidae: Sterictiphorinae), from South Korea with description of a new species

Yasumatsusa Togashi, 1970 and Aproceros Malaise, 1931 are recorded for the first time from South Korea. A new species, Yasumatsua koreana Lee & Lee sp. nov., and newly recorded species, Aproceros pallidicornis (Mocsáry, 1909), are described. Photographs of the new species and a key to genera of Korean Sterictiphorinae are provided.     

First record of the genus Codrus Panzer (Hymenoptera: Proctotrupidae) from South Korea with description of a new species

The genus Codrus Panzer, 1803 is recorded for the first time from South Korea. A new species and three newly recorded species are described: C. tripotini Lee and Park sp. nov., C. ciliatus Townes, 1981, C. nebriae (Watanabe, 1954) and C. niger Panzer, 1803. Additionally, C. ciliatus Townes is newly added to Chinese fauna. A key to the South Korean Codrus, diagnostic characteristics and photographs are provided.