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 Stenotothorax is reported for the first time in the Korean Peninsula. While working on Korean Aphodiinae, we identified Stenotothorax hibernalis (Nakane & Tsukamoto) from the Goseong-gun, Gangwon Province. This species was found in the northern region of South Korea. A key to Aphodiini genera in Korea, habitus photographs, and illustrations of diagnostic characters are provided to facilitate identification.

A taxonomic study of Korean Psammodiini is present. Seven species [Rakovicius coreanus (Kim), Leiopsammodius japonicus (Harold), Psammodius flavolittoralis Kim, Psammodius hangangensis Kim, Psammodius sungshinarum Kim, Rhyssemus inscitus (Walker), Trichiorhyssemus asperulus (Waterhouse)] belonging to five genera are recognized based on morphological characters. A pictorial key, habitus photographs and illustrations of the diagnostic characters of Korean Psammodiini species are provided to facilitate identification.

줄똥풍뎅이속은 호흰개미성인 줄똥풍뎅이족에서 가장 많은 종수를 보유하고 있다. 국내에는 광양줄똥풍뎅이 한 종만이 기록되었으나 또 다 른 종인 Rhyparus helophoroides Fairmaire, 1893를 새로이 발견하여 보고한다. 본 종의 진단형질과 그 사진, 한국산 줄똥풍뎅이속의 검색표의 제 시와 함께 생태에 대한 간략한 정보를 제공한다.