The Gwangneung arboretum, affiliated to the Korea Forest Research Institute, was established in 1987 and it became the Korea National Arboretum (KNA) in May 24, 1999. The entomological collection of KNA currently holds a total of 510,365 specimens of 6,849 species including more than 330 type specimens of Lepidoptera, Hemiptera, Hymenoptera, and Coleoptera are deposited. As the results of recent systematic studies by KNA entomologists, 67 new species were described, and 108 species were newly recorded from Korea and other countries. Not only we have conducted taxonomic studies but also have broaden our research boundary to natural enemy surveys for pine wilt disease vectors, plant and insect interaction, and exotic insect species monitoring. In this presentation, we would like to briefly introduce current entomological researches of KNA in the hope of future collaborations with other entomologists.

Pseudisobrachium is one of the biggest genera with 190 species from the world including one extinct species from France. In Korea, only one species, P. koreana Lim, has been recorded. The ecological information of Pseudisobrachium is poorly studied, however, it was recorded that Pseudisobrachium species are found associated with various ants in several previous studies. As results of taxonomy studies on the Korean bethylids, a new species of Pseudisobrachium is discovered based on one female specimen which was collected from Cheongsong county (Gyeongbuk province) by Malaise trap in 2008. This is the first record of female of the genus in Korea. A taxonomic discussion on the genus Pseudisobrachium, diagnosis and diagnostic characteristics of the new species are provided.

A genus Cryptaulus Ôhira (Coleoptera: Elateridae) includes 15 species in Palearctic region and two of them, C. berus (Candèze) and C. larvatus pini (Lewis), have been recorded from South Korea. Recently, a rare species of genus, C. yamato (Nakane) which is regarded as endemic to Japan, was newly discovered from Gwangneung forest, South Korea with a DNA barcode sequence (In press). As results of the present study, a complete mitochondrial DNA genome of Cryptalaus yamato (Nakane), is reported for the first time. The genome consists of 15,882 base pairs including 13 protein coding genes (PCGs), 20 tRNAs, two rRNAs and a 1,279 bp long AT-rich region. The overall base composition is 69.4% AT and 30.6% GC. The maximum likelihood analysis based on nucleotide sequence data of 13 PCGs supported that C. yamato is involved in monophyletic group of Elateridae.

The Genus Eugahania Mercet belongs to the family Encyrtidae (Hymenoptera: Chalcidoidea), containing 8 species in the world. They are mostly parasitoids on the nymphs of leafhoppers (Hemiptera). Until now, Eugahania have been barely studied in the world. In this study, the genus Eugahanua is reported for the first time from Korea including two new records. A key to the species, and diagnoses and photographs for each species are provided.

The genus Etainia Beirne is one of the small group in the family Nepticulidae (Lepidoptera: Nepticuloidea) and is comprising 16 described species in the world. Among them, just four species have been known from the East Palearctic region. As results of taxonomic studies on Korean nepticulids, two species of Etania, E. peterseni Puplesis and E. trifasciata (Matsumura), are newly recognized from Korea. Description and illustrations of diagnostic characteristics including male genitalia for each species are provided with information of host plants.

An investigation on the habitation of Callipogon relictus Semenov was carried out in Gwangneung forest, Korea and Ussurisky nature reserve, Russia. During the investigation period (2007–2018), a total of 25 emergence holes, 10 pupal chambers, 10 adults, and two larvae of C. relictus were identified in Gwangneung forest. In this presentation, we provide biological information on habitation of C. relictus in Gwangneung forest by comparison and combination of survey results in Ussurisky nature reserve, in 2015 and 2018. In addition, the distribution range of C. relictus is also reviewed in the Korean Peninsula with a new location.

Host relationships between insects and plants are one of the major factor driving evolutionary diversification within terrestrial ecosystems. Beetles (Coleoptera) are the most diverse and species-rich group of insects, and a robust, time-calibrated phylogeny is fundamental to understanding macroevolutionary processes that underlie their diversity. Recently, many studies have been carried out about the relationships among those taxa according to the attention on co-evolution of phytophagous insects and their hosts, however, most of them focused on special taxa (family or genus level) of insects. In this presentation, we especially reviewed current trends of studies on interactions between coleopteran insects and host plant in the world and Korea for proposals of future studies.

자연생태계 내에서 곤충은 식물과 다양한 관계를 맺고 살아가고 있는 중요한 분류군이라 할 수 있다. 특히, 대부분의 곤충은 식물을 먹이로 하는데 잎, 줄기 및 뿌리 등 먹이선호도에 따라 가해부위가 다르며, 가해특성에 따라 흡즙성, 저작성, 종자가해성, 혹형성 및 잠엽성과 같은 다양한 기능군으로 나누어 볼 수 있다. 최근에는 곤충에 의한 화분매개의 중요성이 재조명됨에 따라 이를 증진시킬 수 있는 방안에 대한 논의가 활발하게 이루어지고 있다. 이외에도 중요 식물종의 보존과 곤충의 연관성에 초점을 두고 보전의 효율을 증대할 수 있는 방안도 시도될 필요성이 있다. 본 연구에서는 우리나라에서의 곤충과 식물과의 상호관계에 대해 폭넓게 살펴보고 향후 연구가 필요한 분야를 제시하고자 한다.

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.

Epyris Westwood, 1832 is the largest genus of Bethylidae with more than 300 nominal species and 19 species of Epyris have been recorded in Korea. The Epyris species are small to medium sized (2–10 mm) wasps with the palpal formula 6:3; the median lateral clypeal lobe reduced; pronotum usually longer than wide; notauli and parapsidal furrows present; scutellar pits not connected by a groove; basal vein of the fore wing arising almost at apex of subcostal vein. As results of taxonomic studies on Korean bethylids, Epyris emiae Terayama, a brachypterous species, is first discovered from South Korea. In this presentation, a diagnosis, figures of diagnostic characteristics of E. emiae are provided with a discussion on forewing veins of Korean bethylid genera.

Hymenoptera is one of four largest orders of insects, with over 150,000 described species, 132 families, 27 superfamilies, and 2 suborders. There are currently about 3,000 hymenopteran species in 65 families and 20 superfamilies known in South Korea, of which the majority of the families have been studied while some of them are still poorly studied. The present overview on South Korean Hymenoptera aims to provide brief taxonomic history of the studies, a complete bibliography, a list of South Korean hymenopteran species, and information on South Korean hymenopterists for each taxon.

큰머리톱가슴긴고목벌레[Mimemodes cribratus (Reitter)] (신칭)을 국내에서 처음으로 보고하고, 한국산 톱가슴긴고목벌레과의 종 분류 검색표 및 본 종의 기재문과 식별형질에 대한 사진을 제공한다.

The genus Stigmella is one of the largest group in the family Nepticulidae (Lepidoptera: Neticuloidea), comprising 428 described species in the world. In Korea, totally eight species have been known to date so far we know. Recently two newly recorded species are collected from Gwangneung forest, Gyeonggi province, Korea. This study is aimed to report two species, S. omelkoi Puplesis, 1984 and S. kurokoi Puplesis, 1984, for the first time from Korea. These two species have been known as mining on Quercus (Fagaceae) in larva stage. We provide specific diagnosis, illustration of diagnostic characters for each species with available information including collection locality, host plant and distribution range.

While working on beetles collected by using flight interception trap, we found specimens possessing similar characters with salpingidine genus Lissodema Curtis. After detailed examination of the specimens and comparison with other Lissodema species, we concluded that these specimens represent a new species of the genus. The genus Lissodema was first proposed by Curtis based on Lissodema heyana Curtis and contains 19 species in the Palaearctic region. In eastern Asia, 14 and three species are recorded in Japan and Russian Far East, respectively, but no species have been reported from Korea. In this study, a description, habitus photographs and line drawings of diagnostic characters of a new species from Korea are provided.

The family Monotomidae Laporte includes about 240 species placed in 33 genera worldwide and five species in three genera have been recorded to date in the Korean Peninsula. Mimemodes Reitter contains 15 species occurring worldwide including nine Palaearctic species, of which five are recorded in Japan. In the Korean Peninsula, the genus and a single species, Mimemodes emmerichi Mader, were first recorded by Kang et al. In the present study, we report an additional Korean species of the genus, namely Mimemodes cribratus (Reitter). We provide a redescription, images of habitus and diagnostic characters of the species along with a key to Korean species of Monotomidae.

Cerambycidae, a family of Coleoptera (Insecta: Chrysomeloidea), include approximately 33,000 species from the world and 357 species are recorded from the Korean peninsula. The members of this family are regarded as insect pests because they bore inside of host plants, otherwise, some lepturine species are pollinators of flowering plants. In Korea National Arboretum (Korea Forest Service), we are carrying out investigation of cerambycids biodiversity in Korea and neighboring countries. As results, we present some results of studies on host plants of Korean Cerambycidae and further study plans in a new project, "interactions between phytophagous insects and plants including microorganisms" in Korea National Arboretum.

한국산 밑들이벌속의 분류학적 재검토를 수행한 결과, 미기록종인 짧은밑들이벌(Leucospis sinensis Walker, 1860) (신칭)의 국내분포를 처 음으로 보고한다. 한국산 밑들이벌속의 검색표, 식별형질, 생태정보, 주요 형질에 대한 사진을 함께 제시한다.

Bethylus Latreille, a type genus of the family Bethylidae, is represented by about 32 species and is recorded fromthe Palaearctic and the Nearctic regions. In East Asia, the genus has been reported from Far Eastern Russia, China andJapan. The genus was well-known as ectoparasitoid of micro-lepidopteran insects including gelechiids, coleophorids.As results of taxonomic study on Korean Bethylinae, the distribution of Bethylus is newly confirmed in South Koreaand the species was identified as B. fuscicornis (Jurine, 1807). We provide the description, diagnostic illustrations of B.fuscicornis and a key to Korean genus of Bethylinae.

In the present study, we report the first complete mitochondrial DNA genome of the genus Callipogon based on C.relictus, a natural monument and endangered species in South Korea. The mitogenome is 15,742 base pairs with 13 proteincoding genes (PCGs), two rRNAs, 22 tRNAs, and a 1033 bp long AT-rich region. The overall base composition was67.3% AT and 32.7 GC. Among 13 PCGs, seven genes (Nad2, Atp8, Atp6, Nad4L, Nad6, Cob, Nad1) harbour the typicalstop codon TAA or TAG, whereas remaining five genes terminate with T. Interestingly, Cox3 employs AGA as the terminationcodon.