Strain Q3-56, isolated from Arctic tundra soil, was found to be a Gram-stain-negative, yellow-pigmented, oxidase- and catalase-positive, non-motile, non-spore-forming, rod-shaped and aerobic bacterium. Strain Q3-56 grew optimally at pH 7.0 and 28 °C. The strain could tolerate up to 1 % (w/v) NaCl with optimum growth in the absence of NaCl. The strain was not sensitive to oxacillin and ceftazidime. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain Q3-56 belonged to the genus . Strain Q3-56 showed the highest sequence similarities to T17 (96.58 %), Gsoil 043 (96.50 %), NS28 (96.43 %) and QTA69 (96.43 %). The predominant respiratory isoprenoid quinone was identified as MK-7, The polar lipid profile of strain Q3-56 was found to contain one phosphatidylethanolamine, three unidentified aminolipids, three unidentified lipids and one unidentified phospholipid. The G+C content of the genomic DNA was determined to be 49.1 mol%. The main fatty acids were summed feature 3 (comprising C 7/C 6), iso-C, C 5 and iso-C 3-OH. On the basis of the evidence presented in this study, a novel species of the genus , sp. nov., is proposed, with the type strain Q3-56 (=CCTCC AB 2019271=KCTC 72739). Emended descriptions of , and are also provided.