Chromobacterium pseudoviolaceum Kämpfer et al. 2009 is a later heterotypic synonym of Chromobacterium violaceum Bergonzini 1880

Published data on the genome sequences of Chromobacterium pseudoviolaceum LMG 3953 T and Chromobacterium violaceum ATCC 12472 T suggest that both isolates belong to the same species. Previous 16S rRNA gene sequence comparisons had demonstrated that these species share 99.9 % sequence similarity. Initial investigations of fatty acid patterns and substrate utilization had shown only a few differences between the type strains of both species. Despite the 47.5 % homology by DNA-DNA hybridization studies between these strains, in silico whole genome sequence comparisons have clearly demonstrated that OrthoANIu and Mash/MinHash values were >99.18 %. Molecular phylogeny based on the estimated phylogenetic positions of the published genome sequences of the two type strains, and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry analyses indicate that these strains are members of the same species. Due to priority of publication and validation of names, Chromobacterium pseudoviolaceum is reclassified as Chromobacterium violaceum.