본 연구의 조사지역인 갑천은 충청남도 금산군·논산시와 대전광역시를 북류하고 금강으로 흘러드는 도심하천이다. 광대한 갈대 군락과 초원, 버드나무 등 다양한 식생이 분포하며 크고 작은 자연 소택지, 늪, 웅덩이 등의 형태로 자연환경이 잘 보존되어 도시생태계의 주요 기능을 담당하고 있다. 본 연구에서 갑천 일대의 육상곤충류를 대상으로 4월 11~13일, 6월 11~12일, 8월 20~22일 조사를 수행하였다. 조사방법은 직접찾기와 쓸어잡기로, 총 9개 지점으로 나누어 군집 분석하였다. 조사 결과 공단구역인 Site3의 다양성지수가 0.16으로 매우 낮았으며 도심구역인 Site4와 Site7이 각각 다양성지수 2.92와 2.41로 타구역에 비해 낮았다. 반면 산림구역인 Site1, Site8 그리고 Site9는 모두 다양성지수가 3이상으로 높은 편에 속했다.

The Celyphidae, commonly known as beetle flies or beetle-backed flies, are a family of Diptera. The scutellum is enlarged and forming a protective shell over the abdomen, giving them a beetle-like appearance. Species in the family are mostly found in tropical region, especially in South East Asia. Records of North East Asia are rare, in China, some species are found in Southern region. In Japan, few species found in Okinawa region, but only one record of Celyphidae near in mainland area. In this research we firstly record specimen of genus Spaniocelyphus sp., from Korea stored in National Science Museum Korea and Kyongpook National University with comparison of specimen from Tsushima island, Nagasaki prefecture stored in Osaka Natural History Museum.

The mandible character of the Lucanidae is vary by considering of developmental difference in male individual specimen. Especially, species of Genus Cyclommatus Parry, 1862 presents strong mandibular allometry. In this research, The species group which related to Cyclommatus montanellus Möllenkamp, 1904 has been evaluated for the first time in this research with inner teeth composition and positioning to establish clear taxonomic key to each species.

The Subspecies of lucanid beetle Cyclommatus metallifer (Boisduval, 1835) from Indonesia are revised here. Six subspecies were known from Indonesia. Among them, Cyclommatus metallifer otanii Mizunuma and Nagai, 1991 was confirmed to be a synonym of Cyclommatus metallifer aenomicans Parry, 1863. Moreover, a new subspecies, Cyclommatus metallifer butonensis ssp. nov., is described from Buton Island of Indonesia. The identification key, distributional data, photos of adult habitus, male genitalia, and figures for each species are provided.