Goniaceritae is the most speciose supertribe of the subfamily Pselaphinae with more than 3,000 species worldwide. Brachyglutini is the only tribe within New Zealand Goniaceritae, comprised of 8 genera. Physobryaxis Hetschko is monotypic genus of the subtribe Brachyglutina. Although the adults of P. inflatus is close to the members of genus Gastrobothrus Broun, 1882, it is characterized by median antebasal fovea and antebasal sulcus on pronotum. In this study, we report six species of Physobryaxis examining 21 specimens. Illustrations of the habitus, diagnostic characters including male genitalia, and key to the species are also provided. Additionally, we present a distributional map divided into areas based on Crosby’s code.

• Yeon-Jae Choi(Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju 28644, Korea) Corresponding author
• Richard A. B. Leschen(Manaaki Whenua―Landcare Research, New Zealand Arthropod Collection, Private Bag 92170, Auckland, New Zealand)
• Jong-Seok Park(Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju 28644, Korea)