hanstruepera neustonica hanstruepera neustonica hanstruepera neustonica is a gram-negative, strictly aerobic, rod-shaped, non-spore-forming and non-motile bacterium from the genus of hanstruepera. hanstruepera neustonica scientific classification domain: bacteria phylum: bacteroidota class: flavobacteria order: flavobacteriales family: flavobacteriaceae genus: hanstruepera species: h. neustonica binomial name hanstruepera neustonicahameed et al. 2015 type strain cc-py-50