Cystobacter is a genus in the phylum Proteobacteria (Bacteria).
The genus name stems from Greek noun κύστις (kustis), meaning "bladder" and Neolatin masculine noun bacter "rod" consequently the Neolatin masculine noun Cystobacter means bladder-forming rod.
The genus contains 8 species (including basonyms and synonyms), namely
C. armeniaca ( Reichenbach 2007, sp. nov.; L. fem. n. armeniaca, an apricot-tree, intended to mean apricot-colored.)
C. badius ( Reichenbach 2007, sp. nov.; L. masc. adj. badius, chestnut brown.)
C. ferrugineus ( (Krzemieniewska and Krzemieniewski 1927) McCurdy 1970, species.; L. masc. adj. ferrugineus, of the color of iron-rust, dark-red.)
C. fuscus ( Schroeter 1886, species. (Type species of the genus).; L. masc. adj. fuscus, dark, swarthy, dusky, tawny.)
C. miniatus ( Reichenbach 2007, sp. nov.; L. masc. part. adj. miniatus, cinnabar-red.)
C. minus ( (Krzemieniewska and Krzemieniewski 1926) McCurdy 1970, species.; L. neut. adj. minus (comparative of parvus, small), smaller. The epithet minus is in the neuter gender, but the genus name Cystobacter is in the masculine gender! The correct epithet should be minor.)
C. velatus ( Reichenbach 2007, sp. nov.; L. part. adj. velatus, veiled, covered.)
C. violaceus ( (ex Kühlwein and Gallwitz 1958) Reichenbach 2007, nom. rev., comb. nov.; L. masc. adj. violaceus, violet colored.)
