The first checklist of the North Korean insects was presented by Zhu (1969), and it included 34 species of Tortricidae. From the early 1970s to the late 1980s, the Hungarian Natural History Museum (HNHM) had conducted zoological expeditions to North Korea under cooperative scientific research agreements (Park & Lee, 1992). These expeditions added significant information to our knowledge of the fauna of North Korea, including a large numbers of Lepidoptera. Based on the entomological collection of Hungarian Natural History Museum, Budapest, we report three species of Tortricidae (Lepidoptera), Ancylis melanostigma Kuznetsov, Eucoenogenes japonica Kawabe, and Eucosma glebana (Snellen) for the first time from North Korea. Photos of adults and the genitalia of the newly recorded species are provided with brief comments on the distribution. Also taxonomic accounts for the species are given.

The genus Periphyllus has been revised as seven species in the Korean Peninsula. Recently, Periphyllus hokkaidensis Sorin 1990 is newly discovered on the young shoot of Acer mono subsp. okamotoanum in Ulleung Island. This is the first record found P. hokkaidensis in other areas except Hokkaido, its origin region. As the result of this study, we announce totally eight species in this genus and present description and illustration of P. hokkaidensis with apterous viviparous females.

Western grape rootworm, Bromius obscurus is a well-known pest of grape vines in Europe although it was originated from America. Although this species was originally described in America, its distribution became pandemic and are known to occur in Korea (포도꼽추잎벌레) as well. We recently compared their morphologies and COI sequences and found that the Korean species is not B. obscurus, but a similar species either within the same genus, or possibly in a different genus of Eumolpinae of Chrysomelidae as their sequence similarity is less than 90%. Preliminary comparison between the two species is given with outer morphology and COI barcode sequences.

Study of the Korean Hemerobiidae has been so scarce that only three species in two genera were recorded in Korea. Here we report an undescribed species, Micromus angulatus, new to Korea. A brief description and images of the wing pattern, and adult and genitalia of both sexes are provided.

Up to days, 5 species belonging to the genus Clytus, one of the large genera among the tribe Clytini have been recorded from Korean peninsula. The genus Clytus can be distinguished from the other genera by combination of following characteristics: width of head between each antennal socket longer than length of scape; carinae on frons absent; 1st segment of hind-tarsus 2 times shorter than combined length of 2nd+3rd segments; hind-femora weekly swelled in middle part; posterior part of metasternum without process in ventral view. Clytus sp. nov. is most similar to C. clavicornis Reiche, an endemic species to Sicily island in Southern Italy, having thickened 5th or 6th to apical antennal segment. However, this species can be distinguished from the latter species by specific morphological characteristics. As a result of this study, we report Clytus sp. nov. as new to science with brief description and illustrations diagnostic characteristics with key to the Korean Clytus species.

The genus Promalctis Meyrick, 1908 is the largest genus of the family Oecophoridae, with more than 150 described species in the world (Wang et al., 2009; Du et al., 2009). The genus is mainly distributed in the Palaearctic and Oriental regions, probably with the highest diversity in the South and East Asia. However it has been very poorly studied to date, with only with only 4 publications which were based on very limited collecting. In total, 76 were reported from China, which is more than half of the known species in the Palaearctic region(Wang, 2006; Du et al., 2009), 14 species known from Korea (Park & Park, 1998), 12 species from Japan (Fujusawa, 2002), 8 species from Russian Far East (Lvovsky, 1976, 1985, 1986), and 3 species from Nepal (Lvovsky, 2000a). In the Oriental region, since Meyrick (1908a, 1908b) described 14 species from India and Myanmar, Lvovsky (2000a, 2000b) described 25 additional species from the southern Asia, including the southern part of China, Malaysia, Indonesia, and the Philippines. In Vietnam, only 4 species, Promalactis albiapicalis Lvovsky 1997, P. buonluoi Lvovsky 1997, P. fansipanella Lvovsky 2007, and P. suzukiella (Matsumura 1931), have been described to date(Lvovsky, 1997, 2007a). The aim of this study is to describe six new species of Promalactis based on material mainly collected in the northern part of Vietnam. Adults, head parts, wing venations, and the male or female genitalia of the new species are illustrated.

The genus Scolytus of the family Scolytidae comprises more than 120 species through the world. Fifteen species of the genus Scolytus are revised from Korean peninsula. The genus Scolytus can be distinguished from the other genera by combination of following characteristics: frons slightly concave or convex with vertical wrinkles; club longer than 7-segmented funicle; pronotum fairly large, shining, punctured, narrowed towards the front, turning into a more slight or distinct neck-like constriction; vicinity of scutellum deeply impressed; elytra flat with punctures densely or sparsely arranged in rows; abdominal sternites from 2nd to 5th obliquely, convexly, concavely or vertically ascendant and with or without process or tubercles at middle. Scolytus frontalis Blandford, 1894 is new record to Korea. This species was collected from living Zelkova tree, Zelkova serrata which were planted along the street. We provide the habitus of this species and its biological informations.

Two new species of Tylenchorhynchus Cobb, 1913 from sugar cane fields in Sudan, T. sudanensis and T. elamini are described and illustrated. T. sudanensis is characterized by rather medium body size female, L= 0.692 ㎜ long with rather medium stylet length of 20 – 23 ㎛. While T. elamini is characterized by medium body size female, L = 0.61 – 0.78 ㎜ long, medium stylet length of 16 –19 ㎛. Different characters of two new species are discussed. In addition, vital measurements and brief descriptions of two species are presented.

A new species of Adoxophyes unique from other closely resembling species was discovered based on molecular characters. Larvae of this species were collected from sweet cherry (Prunus avium) imported from China and intercepted under plant quarantine inspection at Korean sea and airport in 2008. They were reared to adult in the laboratory for accurate identification. We also collected two specimens from China for this study. In addition, we conducted a comparative study of three related Korean species (A. orana, A. honmai, and A. paraorana (= orana-like)) to confirm the identity of new species. We compared DNA barcoding sequences (~658 bp) of the mitochondrial cytochrome c oxidase subunit I (COI) gene from 13 specimens of four Adoxophyes species. We also compared variable internal transcribed space region 1 (ITS 1) nuclear rDNA sequence for further identification. As a result of this study, we confirmed the identity of Adoxophyes a new species. We also provided pairwise p-distances among the species and their neighbor-joining tree.

The genus Synanthedon Hübner, 1819 belong to family Sesiidae described about 51 species in the Palearctic region (Špatenka et al., 1999). Genus Synanthedon characterized by following characters (Špatenka et al., 1999): Antenna occasionally with a white apical spot; labial palpus smooth or weakly tufted; transparent areas of forewing (ATA, PTA, ETA) usually present; hindwing transparent; abdomen with large anal tuft in male. Matsumura (1931a, b) reported two species of the genus for the first time from Korea, they are mainly studied by Inoue et al. (1982), Park et al. (1983), Park (1986), and Arita et al. (2004). Presently, genus Synantedon have included the following eight species in Korea (Arita et al., 2004): S. bicingluata (Staudinger, 1887), S. ulmicola Yang & Wang, 1989, S. haitangvora Yang, 1977, S. unocingulata Bartel, 1912, S. velox (Fixsen, 1887), S. tenuis (Butler, 1878), S. martjanovi Sheljuzhko, 1919, and S. quercus (Matsumura, 1911). In this study, four new species belonging to the genus are described based on morphological characters.

Twenty-five species of the genus Psallus Fieber 1858 are revised from Korean Peninsula. Two new species are described: Psallus sp. nov. 1 and P. sp. nov. 2. Four species, Psallus rogeoguttatus Yasunaga et Vinokurov 2000, P. cinnabarinus Kerzhner 1979, P. flavescens Kerzhner 1988, and P. longinovae Kerzhner 1988 are reported for the first time. The checklist is reconstructed and a key is provided to distinguish all Korean species with the clear dorsal photos and illustrations of male genitalia. In addition, biology is discussed for all possible species according to collection data.

Metcalfa pruinosa (Say) (Hemiptera: Flatidae), the citrus flatid planthopper(CFP) is suddenly discovered this year in Seoul and Gyeonggi Province, Korea. CFP is originally distributed in the Eastern parts of North America(Metcalf and Bruner 1948), and recently spreading to European countries(Baker et al. 2008) such as northern Italy, Spain, and France. It is an economically important plant-sucking insect having wide host range including many agricultural crops such as grapefruit and citrus, and ornamental trees, camellias, azaleas, and magnolias(Dean and Bailey 1961) mediating plant viruses. We discovered large samples on Hosta longipes (Franch. & Sav.) Matsumura, Liriope platyphylla F.T.Wang & T.Tang, Weigela subsessilis L.H.Bailey, etc. in Seoul and Suwon on August 2009. In this report, we announce their taxonomic position, morphological characters, distribution, host information, and importance as a possible pest in the Korean peninsula.

Study of the Korean Hemerobiidae has been so scarce that only three species in two genera were recorded in the list of insects in Korea (1994). Here we report two undescribed species, Hemerobius harmandinus and Micromus variegatus, new to Korea. Descriptions and images of the adults and their genitalia are provided.

We reviewed the tribe Oidaematophorini from the Korean peninsula. Fourteen species of 5 genera are recognized including new species, Hellinsia chuncheonensis sp. nov. and H. cyrtoacantha sp. nov. Five species are also reported as new to Korea: Adaina microdactyla (Hübner [1813]), Hellinsia ishiyamanus (Matsumura 1931), H. kuwayamai (Matsumura 1931), H. nigridactyla (Yano 1961) and Oidaematophorus iwatensis (Matsumura 1931). All the available information, including distributional ranges and biology of each taxon, is provided. The keys to the genera and species of Oidaematophotini is given. Illustrations of the images and male and female genitalia are provided.

Up to days, 15 species of the genus Xylotrechus, which have most diverse species among the tribe Clytini, have been recorded from Korean peninsula. The genus Xylotrechus can be distinguished from the other genera by combination of following characteristics: length of antennal socket longer than 1st segment of antenna; antennae reaches about 2/3 of elytra or less; carinae on frons well developed; 1st segment of hind tarsus 2 times longer than total length of 2nd+3rd segment; carinae on frons exceeding vertex; compound eye joined prothorax. In 2007, we collected a specimen which is belong to the genus Xylotrechus from Goyang-si, Gyeonggi province and we identified this specimen with Xylotrechus pavlovskii Plavilstshikov. Xylotrechus pavlovskii Plavilstshikov is easily distinguished from the congeneric species by following characteristics: femora black except basal half pale brown; antennal socket with yellow pubescence patch; pronotum black with distinct six yellow pubescence patches; elytra black with four pairs of yellowish linear pubescence patches except anterior 1/5 part reddish, apice blunt with inner and outer small sharpen projection. As a result of this study, we report this species for the first time from Korea with description and illustrations of diagnostic characters.

The genus Platyptilia Hübner is the largest group of the tribe Platyptiliini (Lepidoptera, Pterophoridae) distributed in the Afrotropical and Palaearctic regions and rarely from the Pacific and Nearctic region, with 107 species (Gielis 2003) known from all over the world. From the Palaearctic region, 25 species have been described: 6 from Japan, 3 from China, and 11 from Russia, and two species, Platyptilia suigensis Matsumura and P. farfarellus Zeller from Korea. Recently, we recognized 5 species, including a new species and two species new to korea: Platyptilia ignifera Meyrick and P. nemoralis Zeller.

Park (2001) described a new species of Tisis Walker, which was the first lecithocerid recognized from Thailand. Subsequently, several taxonomic papers on the family in Thailand have been published, in which more than 50 new taxa were described (Park, 2002a-b; 2003a-c; 2004; 2005a-b; 2006a-b). For the genus Torodora Meyrick, Park (2002a, 2007) described 18 new species from Thailand. Recent study of the lecithocerid moths collected in Thailand during 1980 revealed two species with venation that does not match that of any of the known genera of the family. The two species look more or less similar each other in the forewing coloration, but the shape of the wings and their venation are quite different. Generally, for the genus-level taxonomy in the family Lecithoceridae, the wing venation has been treated as most important character distinguished genera, and many genera of the family, more than 40% of the known genera, were established as monotypic by early workers (Meyrick, 1925; Gozmäny, 1978), based on their different venations. Although the wing venation is an important character to define the generic status of the family, the combination of venations with the other morphological characters including genital character should be considered. For these reasons, many small genera of the family are needed to be revised with a result in comparison of more characters other than wing venation. In this study, two new genera, Caveana gen. nov. and Triviola gen. nov., belonging to the subfamily Torodorinae, based on Caveana diemseoki sp. nov. and Triviola puiensis sp. nov. are described. At the same time, two new Torodora species, T. karismata sp. nov. and T. youwon sp. nov., are also described from Thailand. Images of adults and genitalia are given. Specimens examined are based on the collection of the Osaka Prefecture University, collected in Thailand by Japanese specialists during 1980

The genus Nemophora Hoffmannsegg is the largest group belonging of the family Adelidae. Based on the material in the collections of the Kangwon Nat. University, Incheon University, and Korea National Arboretum, Korea, we found that three species Nemophora albiantennella Issiki, N. tyriochrysa Meyrick and N. wakayamensis Matsumura are known for the first time from Korea. Taxonomic notes and photographs of adults and male/female genitalia for the newly known species are provided.

Fourteen species of the genus Aulacorthum Mordvilko 1914 (Sternorrhyncha: Aphididae) are recognized from the Korean Peninsula. One new species, Aulacorthum artemisiphaga sp. nov. on Artemisia princeps and Artemisia stolonifera (Asteraceae) was compared with the seven congeneric species based on their morphological and molecular characteristics. Morphometric analysis using 29 morphological characters shows that A.artemisiphaga sp. nov. can be distinguished from the seven congeneric species. In comparisons of COI and CytB genes, A. artemisiphaga sp. nov. had inter-specific genetic distances (average 7.5% for COI and average 7.4% for CytB) similar to those of other congeneric species. Host plants of the Korean Aulacorthum are reviewed.

The genus Tetramoera Diakonoff (Tortricidae: Olethreutinae) is small group, including 6 species worldwide (Brown, 2005). Among them, 4 species, T. flavescens Kuznetsov, T. isogramma Meyrick, T. paragramma Meyrick, and T. schistaceana Snellen, have been described from the Oriental region in the early 20th century. And the other two species, T. gracilistira Turner, and T. leptalea Diakonoff were reported from Australia and South Africa respectively. During the course of the study on North Korean Tortiricidae based on the material deposited in the Hungarian Natural History Museum, Budapest, Hungary, one species of the genus Tetramoera Diakonoff was found. In the present study, the genus Tetramoera Diakonoff, is reported for the first time from the Korean Peninsula. Also a new species, Tetramoera bongwaensis sp. nov., is described as new to science. Photographs of the adults and male genitalia are presented.