nevskia nevskia nevskia is a gram negative, strictly aerobic and motile genus of bacteria from the family xanthomonadaceae. nevskia scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: xanthomonadales family: xanthomonadaceae genus: nevskiafamintzin 1892 type species nevskia ramosa species n. aquatilis n. persephonica n. ramosa n. soli n. terrae