After NCBI (National Center for Biotechnology Information)

<==o Haloarcula
   |-- H. aidinensis Zhou et al., 1994
   |-- H. ajinwuensis 
   |-- H. algeriensis 
   |-- H. altuensis 
   |-- H. amylolytica 
   |-- H. argentinensis Ihara et al., 1997 [H. argentinos]
   |-- H. californiae Torreblanca et al., 1985
   |-- H. hispanica Juez et al., 1986
   |-- H. japonica Takashina et al., 1991
   |--o H. marismortui Oren et al., 1990 [Halobacterium marismortui Elazari-Volcani, 1940, incl. H. marismortui marismortui]
   |  `-- H. marismortui ATCC 43049
   |-- H. quadrata Oren et al., 1999
   |-- H. sinaiiensis Javor et al., 1982
   |-- H. vallismortis Torreblanca et al. 1986 [Halobacterium vallismortis Gonzlez et al., 1979]
   |-- H. sp. 2KYS1 
   |-- H. sp. 2Sb1 
   |-- H. sp. 2TK2 
   |-- H. sp. 2TK3 
   |-- H. sp. 3TK1 
   |-- H. sp. 2TK2 
   |-- H. sp. 2TK3 
   |-- H. sp. 4TK1 
   |-- H. sp. 4TK3 
   |-- H. sp. 5Mm10 
   |-- H. sp. A283 
   |-- H. sp. A337 
   |-- H. sp. A43  
   |-- H. sp. AB19 
   |-- H. sp. AJ4 
   |-- H. sp. AJ7 
   |-- H. sp. ARG-2 
   |-- H. sp. AS7094 
   |-- H. sp. B44A 
   |-- H. sp. D1 
   |-- H. sp. LCKW-Isolate15A 
   |-- H. sp. LCKW-Isolate20A 
   |-- H. sp. LCKW-Isolate20N 
   |-- H. sp. M4r1 
   |-- H. sp. SP2(1) 
   |-- H. sp. SP2(2) 
   |-- H. sp. SP4 
   |-- H. sp. OHF-1 
   |-- H. sp. OHF-2 
   |-- H. sp. Q6 
   `-- H. sp. YW016

Special thanks to:

Nils Hartmann, for collecting this information and species.

Reference(s):