A crustose red alga, Lithophyllum neo-okamurae A.Kato, D.Basso, Caragnano, Rodondi, V.Peña & M.Baba, is reported a new record from Korea and its biogeographic distributions are extended in Korea. Lithophyllum neo-okamurae has been known as endemic species in Japan. Despite the resemblance between L. neookamurae and L. okamurae, our molecular and morphological analyses have revealed the simultaneous presence of both species in Korea. Although L. neo-okamurae and L. okamurae share morphological similarities, there are notable variations in gene sequences, with a range of 9.1-11.3% in psbA and 14.8-15.3% in rbcL. Specifically, while L. neo-okamurae is distributed throughout the entire coastline of Korea, L. okamurae is predominantly found in southern region. Furthermore, our analyses have revealed their detailed distributions in Korea.

Pseudolithoderma subextensum is a crustose brown algal species in the family Lithodermataceae and order Sphacelariales. This species is distributed in several regions across the world including, Europe, Western Atlantic, Middle East and Asia (Hong Kong and Japan). Recent floristic surveys along the Korean coastal shores have revealed new records of encrusting brown algae. In this study, we report P. subextensum as a new record from Korea. Morpho-anatomical and molecular studies on Ralfsia-like specimens from Korea identified some of them as P. subextensum. Pseudolithoderma subextensum is characterized by dark chestnut brown crust with a hypothallial basal layer and erect perithallial filaments, tufts of hairs occasionally arising from the basal layer, several discoid shaped chloroplasts per cell, plurangia arising terminally on erect filaments and without sterile cells, and unangia arising terminally on erect filaments, elongated cylindrical and without paraphyses. Phylogenetic analyses based on COI-5P (545bp) reveal that P. subextensum are nested within Lithodermataceae and forms the same clade with P. roscoffense. The genetic divergences for COI-5P between them is 24.5%.

Neomyrhessus Minkina, 2024, is a rare genus comprising six species, recently erected from Myrhessus Balthasar, 1955 for N. nanjingensis. To date, all six species have been reported in East Asia, with five from Japan and one from China. In this study, the genus Neomyrhessus is recorded for the first time in South Korea, with the discovery of a new species Neomyrhessus coreanus sp. nov. Description, illustrations of morphological characters, and habitat information for a new species are provided.

The genus Megastylus is a moderate group of the subfamily Orthocentrinae, comprising 38 species in two subgenera from worldwide. The subfamily Orthocentrinae is a high proportion of the genera are cosmopolitan in distribution. Orthocentrines are known as almost solitary koinobiont endoparasitoids. We report this genus for the first time from South Korea. In this study, descriptions of some new species, photographs of diagnostic characterists are provided.

Mantidflies or Mantid lacewing (Mantispidae) is a morphologically interesting group of Neuroptera. This group is a general predator of arthropods and is equipped with raptorial forelegs similar to praying mantis. In Korea, only three species, Climaciella quadrituberculata, Mantispa harmandi, and Mantispilla japonica, are recorded until now. Here we report Genus Necyla and Necyla formosana, new records in Korea. We provide diagnostic character and photos of adult and genitalia.

The subgenus Oropeza Needham, 1908 (Diptera: Tipulidae: Dolichopeza) comprises 27 described species distributed across the Holarctic region. Certain Oropeza species have been reported in neighboring countries of the Korean Peninsula―6 species in Japan, 3 species in China, and 4 species in Russia. Some researchers, such as Byers (1961) and Savchenko (1983), suggested that the distribution of Oropeza cover the East-Palearctic regions, including the entirety of the Korean Peninsula. However, previous records of Oropeza from the Korean Peninsula have not been accepted because of the lack of comprehensive species-level investigations in this region. In this study, we present a new record of the species Dolichopeza (Oropeza) satsuma (Alexander, 1918) in South Korea, with redescription and photographs: general habitus, wing veins, and male genitalia. This finding marks the rediscovery of the subgenus Oropeza in the Korean Peninsula.

Hemipsocus chloroticus (Hagen, 1858) is a leaf litter barklice and has been recorded in Japan, China, Taiwan, South-East Asia, Sri Lanka, and North America. We collected H. chloroticus on Jinju-si, Sanchung-gun, Seoguipo-si, and Ulsan-si from 2022 to 2023. In this study, H. chloroticus is reported for the first time in Korea, and illustrations of diagonistic characters are provided.

The genus Acronicta Ochsenheimer, 1816 is known as a forest pest. The acronictine species is widely distributed across the Afrotropical, Oriental, Australian, and Neartic regions. This study presents a new record of an acronictine species from Korea, including descriptions, illustrations, and diagnostic characteristics. Additionally, the CO1 barcode data of the newly recorded species is compared with the global barcode reference at the species level. New data on the recently recorded species has been obtained from this study. This information will aid in the prompt identification and preparation for potential pest outbreaks.

The genus Cephennodes Reitter (Coleoptera: Staphylinidae: Scydmaeninae) comprises approximately 220 species worldwide within three subgenera (Cephennodes, Aculeodes, Fusionodes). In Korea, two species are recorded: C. (s. str) japonicus (Sharp) and C. (Fusionodes) graeseriReitter. The two subgenera, Cephennodes and Fusionodes, can be distinguished by the form of the parameres in relation to the median lobe, whether fused or divided. In this study, we redescribed two species: C. (s. str) japonicus and C. (Fusionodes) graeseri. Additionally, Cephennodes (Fusionodes) ussuricus (Kurbatov) is recorded first time in Korea. Images of habitus, aedeagus, and a distribution map are provided.

A total of 187 species are involved in the genus Pidonia Mulsant (Coleoptera: Cerambycidae: Lepturinae) worldwide, of which 174 species are distributed in Eurasia. Since Bates recorded P. (P.) gibbicollis in 1888, a total of 17 species have been recorded in Korea. After An & Kwon’s study on Korean Pidonia in 1991, no taxonomic study has been carried out for almost 30 years, making it difficult to identify the species due to their mutations. In this presentation, we provide an update on the taxonomic study of Korean Pidonia and report a newly recorded species, P. (P.) obscurior hakusana, in Korea.

The genus Priopoda is a small group of the subfamily Ctenopelmatinae, comprising 22 species from worldwide, 10 species from the Eastern Palaearctic and 13 species from the Oriental region. This species and genus are report for the first time from South Korea. The Ctenopelmatinae comprises one of the two major radiations of parasitoids of sawflies. The approximately 1,350 species have been reported in 105 genera and nine tribes. In this study, diagnoses and photos of four unrecorded species from South Korea are provided.

The genus Helictes is a small group of the subfamily Orthocentrinae, comprising 11 species from worldwide, most species from the Palaearctic region, four species from the Nearctic, and two species from the Neotropical region. This subfamily is wide morphological variation between genera but most are readily recognizable as orthocentrines. They are generally small sized, clypeus strongly convex and malar space long. Among them, this genus is reported for the first time from South Korea. In this study, description, photographs of diagnostic characterists are provided.

Halictidae 전 세계적으로 3,500종 이상 발견된 큰 그룹이며 사람들의 땀에 이끌리는 특성을 보여 Sweat bee라는 이름으로 불린다. 이번 연 구에서는 꼬마꽃벌과에 속하는 Halictus hedini hedini Blüthgen, 1934을 한국에서 처음으로 보고한다. 본 종의 기재, 분포정보, 그리고 삽화를 제공 한다.

개나무좀과 (Bostrichidae)에 속하는 Lyctoxylon dentatum (Pascoe, 1866)(가슴각진개나무좀; 신칭), Melalgus batillus (Lesne, 1902)(큰머 리개나무좀; 신칭)을 채집하여 한반도에서 처음으로 보고한다. 본 연구는 이들에 대한 간단한 진단형질과 종 정보 및 사진자료를 제공하고자 한다.

굴파리과에 기생하는 종으로 알려진 Bitomus (갗고치벌속)는 한국에 4종 보고되어있다. Bitomus는 Fischer (1987, 1994)에 의해 개정되었 고, Papp (1978, 1981)에 의해 한국에서 보고되었다. Bitomus는 움직이지 않게 연결된 마치 껍질과 같은 2-3번째 또는 4번째 복부마디로 다른 속들 과 구별된다. 본 조사연구 결과로 Bitomus indicus를 국내 최초로 보고한다. 기술과 진단형질도판을 수록한다.

Helina Robineau-Desvoidy (어리가시집파리속, 신칭)은 집파리과(Muscidae) 가시집파리아과(Phaoniinae)에 속하는 큰 분류군 중 하나 로 전세계에 540여종이 기록되어 있다. 그러나 한국에서는 아직까지 기록이 이루어진 바가 없으며, 이번 연구를 통해 한국미기록속 Helina Robineau-Desvoidy 및 미기록종 H. deleta (Stein, 1914), H. evecta (Harris, 1780), H. subpubiseta Xue, 1986을 처음으로 보고한다. 또한, 분류 학적 정보, 형태학적 사진 및 검색표를 작성하였다.

본 연구에서는 쑥에서 서식하는 Pleotrichophorus pseudoglandulosus (Palmer, 1952) 를 처음으로 보고한다. 무시성충에 대한 형태학적 정보, 기주식물, 분포지역, 한국에 분포하는 Pleotrichophorus 속 종들에 대한 분류키를 제공한다.

Mecysolobini족에 속하는 Sternuchopsis (Sternuchopsis) waltoni (Boheman, 1844) (메꽃통바구미; 신칭) 암컷 1개체를 한반도의 남단인 부 산의 가덕도 야산에서 떨어잡기를 통해 채집하였다. 이 바구미가 국내 식물방역법상 검역해충으로 지정되어 있어 침입종 또는 자생종 인지 여부를 판단할 필요가 있으나 현재 작물에 대한 피해가 확인되지 않고 있고, 그 밖의 채집정보도 없어 그 판단은 무리가 있다고 생각된다. 본 연구는 이 바구 미에 관한 국내 발생정보를 더 확보하기 위한 정확한 진단정보 및 생태정보를 제공하고자 한다.

Neoporphyra kitoi Ma. Abe, N. Kikuchi, Tamaki, Tom. Sato, Murase, Fujiyoshi & Mas. Kobayashi has been known as an endemic species in Japan. Its high temperature tolerance suggests that it could be advantageous for cultivation. In this study, we collected it from the Ulleungdo island, Korea and transferred it into Pyropia for a new combination, identified as Pyropia kitoi (Ma. Abe, N. Kikuchi, Tamaki, Tom. Sato, Murase, Fujiyoshi & Mas. Kobayashi) D.J. Kim, T.O. Cho & B.Y. Won comb. nov. based on morphological and molecular analyses. Pyropia kitoi is also reported as a new record species in the list of Korean macroalgal flora. Although we didn’t observe the emergence of new blades from the rhizoidal cells, which is a key character for this species, our molecular analysis of rbcL revealed that our samples from Korea were congruent with “Neoporphyra kitoi” from Japan and were nested within the clade of Pyropia. The gene sequence divergence between the Korean and Japanese samples was 0-0.2%.

본 연구에서는 한국산 미기록속인 밑들이자루맵시벌속(신칭)과 미기록종인 밑들이짧은자루맵시벌(신칭)을 처음으로 보고한다. 밑들이자루 맵시벌속은 잎벌류에 기생하는 것으로 알려져 있으며, 배마디 끝부분이 위쪽으로 굽어져있는 것이 특징이다. 본 논문에는 미기록속, 미기록종의 기 재문과 사진을 제공한다.