youhaiella youhaiella youhaiella is a genus of bacteria from the family of hyphomicrobiaceae with one known species (youhaiella tibetensis). youhaiella scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: devosiaceae genus: youhaiellawang et al. 2015 type species youhaiella tibetensis species y. tibetensis