The former Scelionidae (sensu stricto) is considered to be a part of Platygastridae, recently. During the parasitic wasp collecting with yellow pan trap, aiming at investigating promising biological control agents which attack on plantbug pests for soybean cultivation, one new species and one unrecorded scelionine species were identified. Opisthacantha albertoi sp. n. was collected from central part of korean peninsula. It is very unique by its yellowish body, compared with the black of the most recorded korean scelonine species. It has a long ovipositor which is 1.3 times longer than body length. It was named after the late Dr. S.-B. Ahn, the noctuid specialist. The unrecorded Tiphodytes gerriphagus (Marchal) was famous for its extremely extraordinary habit of diving for Hymenoptera to attack the eggs of gerrid hosts (Gerris, Trepobates spp.). It was collected nationwidely in Korea. As a result, two genera are newly added in korean scelionine fauna and korean Scelioninae is composed of eight species in five genera in total.

Anastatus orientalis Yang & Choi, 2015 (Hymenoptera: Eulpelmidae) is reported for the first time from Korea. It is a solitary endo-parasitoid in egg of Licorma delicatula (Hemiptera: Fulgoridae), Which causes damages to many ornamental and fruit trees in Korea. This species would be a good biological agent for suppression of the spotted lanternfly in Korea. More than 40 specimens of this species were collected in Cheonhyeon-dong, Hanam-city and Samsung-dong, Seoul city. This Korea species was compare with that from China in morphlogical characteristics and barcodes region of COI.

A genus Daptus Fischer von Waldheim, 1823 of the tribe Harpalini Bonelli, 1810 (Coleoptera: Carabidae) is recorded for the first time in the Korea, based on D. vittatus Fischer von Waldheim. A redescription, illustrations of diagnostic characteristics including genitalia of both sexes, and a key to Korean genus of the tribe are provided.

The genus Miaenia Pascoe, 1864 (Coleoptera Cerambycidae) in Korea is taxonomically reviewed in this study. Miaenia was erected by Pascoe (1864) based on the type species M. marmore. Miaenia has been accepted as a subgenus of Sciades for a long time, howerer, Roguet (2012) considered Sciades as a synonym of the genus Miaenia. Previously, two species, M. fasciata fasciata (Matsushita, 1943) and M. maritima Tsherepanov, 1979, of the genus have been reported in South Korea. In this paper, M. tonsa (Bates) is recorded in Korea for the first time. A key to the Korean Miaenia species, diagnoses, illustrations of diagnostic including male genitalia are provided.

A predatory genus Cryptalaus Ôhira, 1967 (Coleoptera: Elateridae) in Korea is taxonomically reviewed in this study. Up to date, two species of the genus Cryptalaus, C. berus Candèze, 1865 and C. larvatus pini Lewis, 1894, have been reported from Korea. From the present study, C. yamato Nakane, 1957 which has been regarded as an endemic to Japan, is reported from the Korean peninsula for the first time. A key to the Korean species of the genus Cryptalaus, diagnosis, illustrations of diagnostic characteristics are provided.

In the present study, Cydia kamijoi Oku is newly recognized in korean insect fauna. This tortricid moth was first found damaging the cones of Abies koreana in Jeju Island 2014. The moth can be a serious insect pest on A. koreana because of high damage rate on the cones, up to 71% average. The genus Cydia now was 11 korean species including C. kamijoi. Regarding this species, some basic information such as collection records, morphological characters, and ecology were provided

The family Scelionidae is distributed all around the world, which has approximately 3,000 species within 150 genera in the world. To date 39 species of 15 genera from 3 subfamilies in Scelionidae are recorded in South Korea. In this study, we report a new record of the genus Idiris with one species. There are many parasitory and predatory insects specializing on spider eggs. Among scelionids, some species (Baeus achaearneus, Comastichus zopheros, Idris sp.) parasitize spider eggs. However, there was no Korean record for scelionid wasps parasitizing in egg sacs of spider. Based on morphology, ecology, and DNA identification, we recognized this species, Idris sp., being new to Korea. All examined specimens and DNA samples are deposited in Kunsan National University.

The genus Toxares (Braconidae: Aphidiinae) is reported for the first time in Korea. Members of Toxares are known as solitary koinobiont endoparasitoids especially specific for aphidine aphids. In this study, Toxares deltiger (Haliday, 1833) is found as new to Korea, which has a wide host range for 31 aphid species within Aphidinae. Thus, this species would be useful as natural enemy for biological control in the future. Diagnosis and host information are included.

A newly recorded glycerid polychaete collected from mud of the tidal flat in the southwestern coast of Korea is identified as Glycera fallax Quatrefages, 1850 based on the morphologies of papaillae and ailerons on proboscis, parapodial postsetal lobes, and branchiae. In this paper, we provide a detailed description and illustration of Korean materials of this species and a key to the species of the genus Glycera from Korean waters.

한반도 주둥이노린재과의 미기록속 Eocanthecona 속을 처음으로 확인하고 Eocanthecona japanicola (Esaki & Ishihara, 1950)의 한반도 분포를 보고한다. 성충표본과 생식기 사진 등의 형태학적 정보 및 생태학적 정보가 함께 제공된다.

The Mesostigmata is an order of Subclass Acari either parasiting to diverse invertebrates or free-living predatory in terrestrial ecosystem. Phoresy is one of the unique behaviors of wingless arthropod dispersal by attaching winged arthropods. We collected mites attached on the dorsal part of abdomen adult sciarid fly, from mushroom culture. The mites were identified as Arctoseius cetratus Sellnick, 1940 in the family of Ascidae. Arctoseius cetratus has short J2, Z1, Z2, and S1, S2 setae, not reaching the bases of following setae. Posterior half of dorsal shield with longitudinal garland of puncta between J and Z setae, peritremes extending anteriorly to midlevel of coxaⅡ. The genus Arctoseius and species Arctoseius cetratus are the first record in Korea. We provided the detail description of the species including the identification key in the family with some ecological notes.

A sea urchin was collected from 140 m deep at Gapado which is nearby Moseulpo in Jejudo Island, Korea on 30 June 2010. This specimen was classified as Echinolampas koreana H.L. Clark 1925, belonging to family Echinolampadidae of order Echinolampadoida based on its morphological characteristics. This order and lower categories are newly recorded from Korea. Distinct morphological characters of this species are as follows: test is relatively high. Abactical system has four large genital pores. Periproct is slightly sunken and situated below equator line. Peristome is very small and rather deeply sunken. Tridentate and ophiocephalous pedicellariae are present. Color in alcohol is light purple. These morphological characters are re-described with illustrations.

Three marine isopods, Symmius yamaguchiensis Shimomura, 2008, Colanthura pigmentata Kensley, 1980 and Synidotea nipponensis Nunomura, 1985 are reported for the first time in South Korea. The family Chaetiliidae, and genera Symmius and Colanthura are new to South Korea. We provide descriptions of the diagnostic characteristics, illustrations of three species and their partial sequences of the mitochondrial cytochrome c oxidase subunit 1 (CO1) for molecular characteristics.

Oncholaimid nematode, Oncholaimus secundicollis Shimada, Kajihara and Mawatari, 2009, is firstly reported based on a comparative morphological study. The present specimens of O. secundicollis are collected from rocky intertidal seagrass on the eastern coast of Korea. Oncholaimus secundicollis is distinguished from all of its congeners by the following combination of morphological characteristics: buccal cavity large with thick cuticular wall and three teeth, left subventral tooth larger than right subventral or dorsal teeth, and the presence of two remarkable precloacal papillae with nine pairs of cloacal setae and single ventral tail papilla with two pairs of short setae. In this study, we provide taxonomic description and illustration of unrecorded species of the genus Oncholaimus.

Three unrecorded species of free-living marine nematodes, belonging to genus Enoplus Dujardin, 1845 collected from rocky intertidal seagrass on the eastern coast of Korea, are described and illustrated. Enoplus taipingensis Zhang and Zhou, 2012 is characterized by longer body size, a series of lateral setae throughout the tail in male, the presence of trumpet-shaped precloacal supplement with well-dilated proximal end, and the presence of spicules with five to eight semicircular plates. Enoplus meridionalis Steiner, 1921 is characterized by the presence of trumpetshaped precloacal supplement with slightly dilated proximal end, paired massive spicules, and tail with two pairs of stout terminal setae. Enoplus mammillatus Timm, 1959 is easily distinguished from the congeners by narrow tubular-shaped precloacal supplement. In this study, we provide detailed morphological features of three Enoplus species by differential interference contrast microscopy and scanning electron microscopy. This is the first report on the species of the genus Enoplus from the Korean waters.

Newly recorded cyproideid species of the genus Terepeltopes was collected from Korean waters. The monotyptic genus Terepeltopes erected with T. dolichorhunia Hirayama, 1983 was only known to be found at West Kyushu, Japan. In this study, the family Cyproideidae Barnard, 1974 is first recorded from Korea by the discovery of T. dolichorhunia, and we provide description and illustrations of this species.

A new species of the genus Ebrechtella Dahl, Ebrechtella juwangensis n. sp. and the male of Ozyptila geumoensis Seo and Sohn, 1997 are reported new to science. Ozyptila utotchkini Marusik, 1990 is reported for the first time in Korea. Habitus photos and illustrations of these three species are provided.

Two newly recorded opheliid polychaetes, Armandia amakusaensis Saito, Tamaki and Imajima, 2000 and Polyophthalmus qingdaoensis Purschke, Ding and Müller, 1995, from Korean waters are reported with the descriptions and illustrations. Armandia amakusaensis can be clearly distinguished from its congeners by the following characteristics: the prostomium has 2 or 3 subdermal eyespots; total number of setigers are 29; the branchiae are present on the setigers from the setiger 2 to the second or third from the last setiger; the lateral eyespots beginning from the setiger 7 are composed of 11 pairs; the anal funnel has 8~11 papillae and a long cirrus. Polyophthalmus qingdaoensis has the distinguishable characteristics from its relatives as follows: the prostomium has a brain bearing dark pigment-spots; the lateral eyespots are distinct; the body has only dark pigment-streaks on dorsal side. We also provide the keys for distinguishing the species of the genera Armandia and Polyophthalmus from Korean waters.

Rhyparini is one of the tribes of well-known termitophilous scarabs included in Aphodiinae Leach, 1815. Several species of the tribe are known to live in association with termites, with both organisms occurring together in relatively large numbers. In extant numbers of this tribe, the larvae live inside termite nests. The tribe Rhyparini can be distinguished by the following combination of characters: clypeus usually bidentate though sometime feebly so, inflexed edge medially obtusely angulate; frons and vertex with tufts of setae or longitudinal tubercles; pronotum with six longitudinal costae equally spaced in at least posterior half of disc, lateral pronotal edge at least feebly bilobed in anterior half; elytra costae, costae varying on height, number and spacing, elytral apices frequently bulbous, epipleura narrow; posterior prosternal process hastate; antenna 9th segmented, club 3th segmented, segments of club short and compact. The tribe includes 77 species of 12 genera worldwide, and Pittino (2006) published a key to world genera in the subfamily Rhyparinae (tribe Rhyparini). In total, nine species of two genera in the tribe Rhyparini have been recorded in the Palaearctic region up to date: Rhyparus Westwood with eight species and Sybacodes Fairmaire one species, In Japan three species are known, China with one and Taiwan five. However, up to date, any has not been reported in Korea. In the present study we report on the tribe Rhyparini from Korea for the first time, based on Rhyparus azumaiazumai Nakane, 1956. Diagnosis and illustrations of detailed diagnostic characters, including male genitalia are provided.

The Genus Drepanepteryx Leach, 1815 and Drepanepteryx phalaenoides (Linné), 1758 (Neuroptera:Hemerobiidae) are newly reported to Korea. Only one species, Neuronema albostigma have been reported in Korea as a species of Drepanepteryginae. In this study we report another species, Drepanepteryx phalaenoides and provide photos of adult and male genitalia based the specimen examined.