angustibacter speluncae angustibacter speluncae angustibacter speluncae is a gram-positive, strictly aerobic and motile bacterium from the genus of angustibacter which has been isolated from a stalactite from the yongcheon cave in korea. angustibacter speluncae scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: kineosporiales family: kineosporiaceae genus: angustibacter species: a. speluncae binomial name angustibacter speluncaeko and lee 2017 type strain yc2-19yc2-20dsm 103769kctc 39842