The family Opostegidae (Lepidoptera: Nepticuloidea) is a small group that is comprising 192 described species with eight genera in the world. In Korea, only one species, Opostegoides minodensis (Kuroko), has been recorded since Park made a report on the distribution of the species in 1983. As results of taxonomic studies on the family, we discovered a newly recorded species, O. omelkoi Kozlov, for the first time from Korea. All the available information including distributional ranges and host plants is provided with images of diagnostic characteristics of adult and male genitalia.

The Pyraustinae is one of the large subfamily in Crambidae. In Korea, more than 60 species in 20 genera of the Pyraustinae have been reported. Recently, Demobotys pervulgalis (Hampson, 1913) and Ecpyrrhorrhoe dissimilis (Yamanaka, 1958) were recorded by Choi et al. (2015). Among of the Pyraustinae, the genera Callibotys and Sinibotys were established by Munroe and Mutuura (1969). In this study, we report two species of genera Callibotys and Sinibotys from Korea for the first time, with a newly recorded genus Callibotys. Illustrations of adults, male and female genitalia, description are provided.

Six taxa of unrecorded Korean species of charophytes are described. Freshwater and aerial charophytes were collected from the bark of trees, reservoirs, small ponds and swamps from April 2017 to September 2017. The newly recorded species of Korea were Cosmarium quadrifarium f. octastichum, Euastrum turneri, Spondylosium nitens var. triangulare, Staurastrum kouwetsii, Staurodesmus dickiei var. latus, and Klebsormidium subtile. K. subtile was transferred from Stichococcus subtilis.

In 2017, the freshwater algae were collected from reservoirs, small ponds, soil, and rocks in Korea. Eight taxa of Chlorophyta (Chlorophyceae and Trebouxiophyceae) have been newly reported in Korea. The unrecorded indigenous species were Chlorolobion braunii, Coelastrum pseudomicroporum, Coelastrum reticulatum var. cubanum, Monoraphidium nanum, Tetrachlorella incerta, Ecdysichlamys obliqua, Gloeotila scopulina, and Stichococcus jenerensis.

Phytoplanktons were collected from various environments including small marshes, small ponds, reservoirs and brackish water from March 2017 to November 2017. In this study, five species of family Scenedesmaceae were newly recorded in Korea. The genus Desmodesmus was newly reported in Korea. The newly recorded species are Scenedesmus nanus, S. praetervisus, Desmodesmus costato-granulatus, D. lunatus and D. spinulatus. S. nanus and S. praetervisus are known to occur in freshwater, but they were found in the brackish water in this study.

금번 연구를 통해 작은검정주머니나방속이 국내에서 처음 발견되어 보고한다. 작은검정주머니나방속 내 작은날개검정주머니나방에 대한 암컷 형태 특징, 채집지 정보 등을 포함한 이용가능한 모든 정보를 제공하였다. 또한 신속한 종 동정을 위한 DNA 바코드 정보를 작성하였다.

The family Gracillariidae are known as ‘leaf-miners’ comprising 1,966 described species of 106 genera in the world. In Korea, there are 3 subfamily, 14 genera of 58 described species to date. In this study, some new and newly recorded species of the family Gracillariidae were recorded for the first time in Korea. Also, all the available information including synonym list, images for adult and genitalia and distributional rages were provided.

The genus Docirava Walker, [1863] belongs to the tribe Chesiadini of the family Geometridae with only 12 described species in the world. The genus could be distinguished from other genera of Chesiadini with the characters, which had been described by walker in original description as follow : “Proboscis slender, rather long….Legs long, very slender; hind tibiae with four rather short and slender spurs”. In this study, the genus Docirava was first recorded with a new species Docirava sp. nov. with DNA barcode. Also, all the available information including images for both of genitalia and adult, wing venation and descriptional study was provided.

The subfamily Pimplinae currently include 1,737 worldwide species in 77 genera. 78 species in 21 genera have been recorded from South Korea. Among them, the genera Exeristes, Gregopimpla and Paraperithous are small groups with 10, 8 and 6 species from worldwide. The existing South Korean Exeristes and Paraperithous include only one species, E. roborator (Fabricius) and P. chui (Uchida). Three species of genus Gregopimpla have been recorded from South Korea, G. himalayensis (Cameron), G. inquisitor (Scopoli) and G. kuwanae (Viereck). In this study, we report three newly recorded species Exeristes longiseta (Ratzeburg), Gregopimpla ussuriensis Kasparyan and Paraperithous gnathaulax (Thomson) from South Korea, including diagnoses, photographs of newly recorded species and keys to the species of South Korean Exeristes, Gregopimpla and Paraperithous.

Three species of the genus Glaucocharis Meyrick (Lepidoptera, Crambinae) are reported for the first time from Korea: G. melistoma (Meyrick), G. rosannoides (Bleszynski), and G. vermeeri (Bleszynski). The description, distribution, image of the adults, males, and females genitalia are provided. Also, checklist of the genus Glaucocharis from Korea is present.

The family Tischeriidae belongs to superfamily Tischerioidea, comprising four genera and 115 species. Tischeriidae is known as a leafminer, Tischeriid larvae feed between the leaves of the host plants through all instars. In Korea, two genera and four species have been recorded. recently, Sohn (2007) reported one species and Byun et al (2009) arranged checklist of Tischeriidae. In the present study, we provided checklist of this family, including a newly recorded species from Korea. Brief descriptions of species and illustration of adult and genitalia are provided.

Some species of the genus Nemapogon Schrank, 1802 (N. granella, N. cloacella, and N. variatella) are well known as storage pests and distributed worldwide (Gaedike, 2000). The larvae of these moths feed on stored food such as cereals, flour, and dried mushrooms (Robinson and Nielsen, 1993). In Korea, the genus Nemapogon have been reported only one species up to date (Byun et al., 2009), with Nemapogon granella (Linnaeus, 1758). In this study, two additional species of the genus Nemapogon Schrank are reported for the first time in Korea. The adults are briefly described and illustrated, including adults genitalia.

The genus Centistes Haliday is a cosmopolitan group, comprising 89 species (Yu et al., 2016; Aguirre et al., 2017). Among them 41 species have been known from the East Palaearctic region (Yu et al., 2016). Centistes are known to be solitary koinobiont endoparasitoids of final instar larvae (rarely) and Coleopteran adults, particularly the families Anthicidae, Carabidae, Chrysomelidae, Coccinellidae, Curculionidae, and Staphylinidae (Loan, 1964; 1972; Shaw, 1985; Chen and Achterberg, 1997). Previously, 16 Korean species of the genus have been investigated by several researchers (Papp, 1994; Belokobylskij, 2000a; 200b; Ku et al., 2001; Lee et al., 2016). In this study, two species of Centistes are reported for the first time from Korea: Centistes minutus Chen & Achterberg, C. sylvicola Belokobylskij. Diagnosis and photographs are provided for each species.

The genus Cephimallota Bruand, 1851 is reported for the first time in Korea, with one species Cephimallota chasanica Zagulajev, 1965. Adult and genitalia of male are described, with illustrations.

One species of the genus Calamotropha Zeller (Lepidoptera, Crambinae), Calamotropha yamanakai Inoue, 1958 is reported for the first time from Korea. The description, image of the adult, male, and female genitalia are provided in this paper. Also, checklist of the genus Calamotropha from Korea is provided.

The genus Culladia Moore [1886] (Lepidoptera, Crambinae) are found for the first time in the Korea with a species C. dentilinealis Hampson, 1919. The description, image of the adult, male, and female genitalia are provided in this paper.

Two species of the genus Argyresthia Hübner are reported for the first time from Korea: A. albicomella Moriuti, A. alpha Friese & Moriuti. Up to now, unknown information of male genitalia of A. albicomella is firstly described herein. Illustration of adults and genitalia are provided.

In the present study, a species of the subfamily Ypsolophinae, Ypsolopha leuconotella (Snellen, 1884), is reported for the first time from Korea. The diagnosis, description, distribution, adult and genitalia photographs are provided. Species checklist of Korea Ypsolopha are provided.

As a result of the curation of NIBR Insect Collection (NIBR, 2016), we found a new species and 4 newly recordedspecies, Tropideres distinguendus sp. nov., Acorynus latirostris (Sharp), Illis anna Shibata, Phaulimia confinis Sharp, Choraguscissoides Sharp. The genera, Acorynus Schoenherr and Illis Jordan are also newly recorded to Korean fauna. The newspecies, Tropideres distinguendus is easily distinguished from other species by the tubercles and dorsal pubescence pattern.Phaulimia confinis is similar to P. rufobasis, but easily distinguished from the latter by blackish elytral color and tibialpubescence band. Choragus cissoides is similar to C. cryphaloides, but easily distinguished from the latter by the absenceof lateral carina of pronotum.