두줄가슴무당벌레붙이속의 붉은두줄가슴무당벌레붙이와 좁은두줄가슴무당벌레붙이 두 종이 한국에서 처음으로 보고된다. 또한, 외부형태 및 생식기의 삽화, 진단특징, 분포도, 그리고 분류키를 제공한다.

서식지에 따른 토양 절지동물 풍부도 및 딱정벌레 다양성 연구를 위해 세 종류의 시료(낙엽층과 토양 혼합, 낙엽층, 토양 시료)를 확보 후 체 털어잡기 하였다. 2023년 6월부터 8월까지 강원도와 충청북도에서 혼합 시료, 낙엽층 시료, 토양 시료 각각 25개씩 총 75개의 시료를 확보하였 다. 딱정벌레목 다양성을 확인한 결과, 세 가지 시료 중에서 혼합 시료에서 가장 높은 풍부도, 종 부유도, Shannon 지수가 나타났다. 이 논문에서 는 체털어잡기의 생태학적 활용 가능성에 대해 논의해 보았다. 토양성 절지동물의 채집과 시료 종류 사이의 연구가 지속적으로 이루어진다면, 최 종적으로 토양생태계 연구의 발전과 이해를 높일 수 있을 것으로 기대된다.

가는납작벌레과의 미기록종인 Ahasverus advena (Waltl) (곡식가는납작벌레, 신칭), Psammoecus trimaculatus Motschulsky (닮은모래가 는납작벌레, 신칭)을 한국에서 처음으로 보고한다. 각 종에 대한 외형과 진단형질, 분포지도를 제공한다.

Thyrderus Sharp, 1885 속은 전 세계적으로 9종이 포함되어 있으며, 구북구 지역에는 단일 종이 기록되어 있다. 이 연구는 이전에 일본과 대만에서 보고됐던 Thyroderus porcatus Sharp, 1885를 한국에 처음 기록한다. 삽화, 진단형질, 분포 정보가 제공된다.

The family Anamorphidae Strohecker is a beetle family that comprises about 170 species worldwide. This family was traditionally considered as a subfamily of the family Endomychidae Leach because of their similar appearance, but a phylogenetic study revealed it is a separate family. The adults of this family can be distinguished from endomychid species by possessing a tentorium with corpotentorium and separated anterior arms, mesocoxal cavities being broadly closed by meso- and metaventrites, and others. Although more than 20 species have been reported in East Asia, this family has never been reported in Korea. In this study, the family Anamorphidae Strohecker and its 5 species of 3 genera, Bystodes kidoi Sasaji, Bystodes sp.1, Bystodes sp.2, Dexialia hiranoi Narukawa, Idiophyes sp., are reported for the first time in Korea. Illustrations of habitus and diagnostic characters of each species are provided.

The genus Trixagus Kugelann is one of the most diverse genera in the family Throscidae Laporte, which comprises about 80 species. Only a single species of this genus has been reported in Korea throughout the entire family. In this study, three additional species, Trixagus sp., Trixagus leseigneuri Muona, and Trixagus turgidus Hisamatsu are reported for the first time in Korea. Similar to that of the species illustrated in Kovalev, males of Trixagus leseigneuri Muona and Trixagus turgidus Hisamatsu possess sexual modification on mesotarsus. Trixagus sp. and Trixagus turgidus Hisamatsu exhibit characters that are unusual for this genus, including the unincised eye, a blade-like structure on the protibia, and others. Illustrations of habitus and diagnostic characters of each species are provided.

The family Cryptophagidae Kirby (Coleoptera: Cucujoidea) comprises minute beetles, with approximately 800 described species within about 50 genera worldwide. Most members of this family are found in moldy environments and feed on fungal spores and hyphae. The Korean cryptophagid fauna is poorly known, consisting of 22 species belonging to 8 genera. In this study, seven species of Cryptophagidae reported for the first time in Korea: Atomaroides ussurica (Lyubarsky), Cryptophagus micaceus Rey, Cryptophagus pumilus Reitter, Cryptophagus zonatus Lyubarsky, Henoticus pilifer Reitter, Micrambe (Micrambinus) bimaculata (Panzer), and Serratomaria vulgaris Sasaji. Illustrations of habitus, male genitalia, and collection localities of these seven species are provided.

The genus Caenoscelis C. G. Thomson (Coleoptera: Cryptophagidae: Cryptophaginae) comprises approximately 30 species in the world, primarily distributed in the Holarctic region. Although 15 Caenoscelis species occur in the Palearctic region, only a single species, Caenoscelis sibirica Reitter, has been documented in Korea. In this study, Caenoscelis koreanus sp. nov. is described, and Caenoscelis ferruginea (C. R. Sahlberg) is reported for the first time in Korea. The new species can be distinguished from other Caenoscelis species by their subquadrate antennomere 10, fully developed hind wings, and male genitalia with subacute parameres and indistinctly separated lateral lobes. Illustrations of habitus, diagnostic characters, and a distribution map of Korean Caenoscelis species are provided.