niabella drilacis niabella drilacis niabella drilacis is a gram-negative and rod-shaped bacterium from the genus of niabella which has been isolated from a leech (hirudo verbana) from biebertal in germany. niabella drilacis scientific classification domain: bacteria phylum: bacteroidota class: chitinophagia order: chitinophagales family: chitinophagaceae genus: niabella species: n. drilacis binomial name niabella drilacisglaeser et al. 2013 type strain ccm 8410, dsm 25811, lmg 26954, strain e90