citrobacter portucalensis citrobacter portucalensis citrobacter portucalensis is a bacterium in the genus citrobacter which has been isolated from a water well sample in portugal. citrobacter portucalensis scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: enterobacterales family: enterobacteriaceae genus: citrobacter species group: citrobacter freundii complex species: c. portucalensis binomial name citrobacter portucalensisribeiro et al. 2017