Nialoe Tanaka, 1958 is a subgenus of the ground beetle genus Pterostichus (Coleoptera: Carabidae), endemic to East Asia. In a wide sense of Nialoe, it consists of more than 200 species, which has reduced hindwing and possibly diversified by geographical isolation due to poor dispersal ability. To understand this vast group, phylogenetic studies have been conducted, showing that Nialoe s. lat. comprises of five subgenera: Nialoe s. str., Sphodroferonia, Koreonialoe, and two unnamed subgenera. However, there is little knowledge regarding their origin and dispersal. In this study, we examine phylogenetic relationships among the five subgenera of Nialoe s. lat. based on 28S rRNA, wingless, COI, and 16S rRNA. The molecular clock and S-DIVA analyses are devised to investigate the biogeographical history of the group in East Asia. This study may give insight into the biogeographical dispersal and diversification of East Asian carabids.
A new pterostichine species, Pterostichus (Nialoe) jogaesanensis sp. nov., is described from Korea, with illustration of adult, its ma1e genitalia and last abdominal sternite.
덕유산 지역을 대상으로 길쭉먼지벌레류 4종에 대한 고도별, 계절별 분포 및 이동상황을 조사해본 결과 P. ishikawai 가 가장 많은 밀도를 나타내었다. 대분분 종들에서 6월은 저고도에서 많은 빈도를 나타내었으며, 반대로 8월에는 높은 고도에서 많이 채집되는 경향을 보였다. 그리고 9월에서는 6월과 마찬가지로 저고도에서 다소 많은 양이 채집되었다. 조사된 길쭉먼지벌레류 4종중에서 P. audax가 전형적인 곤충의 계절별, 고도별 이동 경향을 나타내었다.