haladaptatus haladaptatus haladaptatus (common abbreviation hap.) is a genus of halophilic archaea in the family of halobacteriaceae. the members of haladaptatus thrive in environments with salt concentrations approaching saturation haladaptatus scientific classification domain: archaea kingdom: euryarchaeota phylum: euryarchaeota class: halobacteria order: halobacteriales family: halobacteriaceae genus: haladaptatussavage et al. 2007 species h. cibarius h. litoreus h. pallidirubidus h. paucihalophilus synonyms haloaccomodus