gen. nov., sp. nov., recovered from human sputum.

Strain 155047 was recovered from human sputum in China in 2021. Preliminary species identification based on limited phenotypic tests assigned the strain to the genus of the family . The genome sequence of the strain was obtained and had ≤84.43 % average nucleotide identity (ANI) and ≤26.3 % DNA-DNA hybridization (isDDH) values with the genomes of type strains of known species. The highest ANI and isDDH matches were with and , respectively. The ANI and isDDH values support that the strain belongs to a novel species of the family . Phylogenomic analysis based on core genes revealed that strain 155047 was located in the lineage. The highest ANI and average amino acid identity values between 155047 and any species of the lineage were 84.43 % and 90.21 %, respectively, lower than the maximum inter-genus pairwise values. This indicates that 155047 belongs to a novel species of a novel genus in the lineage. Strain 155047 could be differentiated from , , and species by a negative reaction for β-galactosidase and the ability to produce acid from l-fucose but not from sucrose. The names gen. nov. and sp. nov. are proposed for the novel genus and species, respectively. The type strain is 155047 (= GDMCC 1.2980=JCM 35262).