The soldier fly, the family Stratiomyidae, is one of the largest and comparatively diverse groups among the Dipteran. Currently, about 2,700 described species of soldier flies are distributed throughout all the zoogeographic regions worldwide, except polar areas. To date, there have been a few sporadic reports of new records in the Korean fauna, but compared to the faunistic surveys of other countries, there are many species that have not yet been reported. Therefore, the authors have conducted extensive field expeditions in Korea for revealing hitherto unknown Korean soldier flies. In the present taxonomic study, the soldier fly genus Chorisops Rondani is reported for the first time from the Korean Peninsula based on the following two species: C. bifurca sp. nov. and C. maculiala Nagatomi, 1964. Herein, the description, diagnosis, external photographs, and taxonomic characteristics of the two species are presented. Furthermore, an identification key for Northeastern species is provided.

The soldier fly subfamily Beridinae in the family Stratiomyidae contains approximately 280 known species, these being distributed across nearly all biogeographical regions with the exception of the polar regions. On the Korean Peninsula, the species diversity of this subfamily has been poorly examined to date, as is reflected in the National species list of Korea by the National Institute of Biological Resources. In this paper, the soldier fly genus Beris Latreille is reported for the first time from Korea, based on observations of the following three species: B. fuscipes Meigen, 1820, B. hildebrandtae Pleske, 1930 and B. hirotui Ôuchi, 1943. Additionally, the authors propose two nomenclatural acts: 1) B. angustifacies Nagatomi and Tanaka, 1972 syn. nov. = B. hildebrandtae Pleske, 1930; 2) B. liaoningana Cui, Li and Yang, 2010 syn. nov. = B. hildebrandtae Pleske, 1930. The authors also provide an identification key, descriptions, photographs and distributional notes on these Korean species.

The subfamily Beridinae of the family Stratiomyidae contains about 280 known species globally, and distributed all over the biogeographical areas except polar region. In the Korean peninsula, the species diversity of this subfamily has been poorly known so far, in accordance with National species list of Korea by National Institue of Biological Resources. In this paper, the soldier fly genus Beris Latreille is reported for the first time from Korea based on following three species: B. fuscipes Meigen, B. hirotui Ôuchi, and B. tigris Lee and Suh, sp. nov. Among them, B. tigris Lee and Suh, sp. nov. was confirmed to be newly discovered. Consequently, three species within this genus have been identified from the Korean peninsula. The identification key, description, external photographs, and taxonomic notes of these Korean species are presented herein.