pseudolabrys pseudolabrys pseudolabrys is a genus of bacteria from the family of nitrobacteraceae. up to now, only one species of this genus is known (pseudolabrys taiwanensis). labrys scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: nitrobacteraceae genus: pseudolabryskämpfer et al. 2006 type species pseudolabrys taiwanensis species pseudolabrys taiwanensis