erythrobacter cryptus erythrobacter cryptus erythrobacter cryptus is an aerobic and slightly thermophilic bacteria from the genus erythrobacter which has been isolated from a hot spring from the alafache spa in portugal. erythrobacter cryptus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: erythrobacteraceae genus: erythrobacter species: e. cryptus binomial name erythrobacter cryptus(da costa et al. 2003) xu et al. 2020 type strain alc-2, atcc baa-386, atcc baa-389, cip 108282, dsm 12079 synonyms porphyrobacter cryptus da costa et al. 2003