is a species of the class Betaproteobacteria in the family Comamonadaceae and order Burkholderiales.
Hydrogenophaga atypica
Hydrogenophaga bisanensis
Hydrogenophaga caeni
Hydrogenophaga defluvii
Hydrogenophaga flava
Hydrogenophaga intermedia
Hydrogenophaga palleronii
Hydrogenophaga pseudoflava
Hydrogenophaga taeniospiralis