울릉도 성인봉의 토양 시료에서 발견한 육각사다리응애 (신칭, Punctoribates hexagonus Brelese, 1908)를 국내에서 처음으로 보고한다. 이종의 형태적 특징을 기재하고 지리적 분포 정보를 제시한다.

From the soil samples collected at Seonginbong in Ulleung Island two unrecorded species of oribatid mite, Punctoribates hexagonus Berlese and Galumna cuneata Aoki were identified. Genus Punctoribates Berlese (1908) are rather small, dark brown, and ball-shaped as adults inhabiting mainly terrestrial ecosystem, but some species live in wet habitats and other mosses at the edge of lakes (Seniczak and Seniczak, 2008). The members of Galumnidae is one of the largest groups of oribatid mites with a world - wide distribution. They are ball-shaped, both the juvenile and adult stages. The sclerotized integument of adults are brown to black. Member of this family are fairly abundant in litter or upper layers of forest soils and commonly distributed in pasture soils of open habitats (Bayartogtokh and Weigmann, 2005). Soil samples were collected from five random samples at 5cm depth consisting of one sample unit. The abundances of soil microarthropods collected from acari and collembola were consisted of 31% and 32%, respectively. We collected 11 species, 9 families of oribatid mite (Acari: Oribatida) from the research site.