Species Methanoculleus thermophilus

Name: Methanoculleus thermophilus corrig. (Rivard and Smith 1982) Maestrojuán et al. 1990

Category, proposed as: species, comb. nov.

Basonym: Methanogenium thermophilicum Rivard and Smith 1982

Etymology: ther.mo’phi.lus. Gr. fem. adj. thermê, heat; N.L. adj. philus -a -um, friend, loving; from Gr. adj. philos -ê -on, loving; N.L. masc. adj. thermophilus, heat loving

Pronunciation (Latin), gender: me-t^ha-no-KUL-le-us t^her-MO-p^hi-lus, masculine

Type strain: ATCC 33837; CR-1; DSM 2373; OCM 174

Conduct genome-based taxonomy at

16S rRNA gene: AB065297 Analyse FASTA

Valid publication: Maestrojuán GM, Boone DR, Xun L, Mah RA, Zhang L. Transfer of Methanogenium bourgense, Methanogenium marisnigri, Methanogenium olentangyi, and Methanogenium thermophilicum to the genus Methanoculleus gen. nov., emendation of Methanoculleus marisnigri and Methanogenium and description of new strains of Methanoculleus bourgense and Methanoculleus marisnigri. Int. J. Syst. Bacteriol. 1990; 40:117-122. 🇺🇸

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Methanoculleus thermophilicus (Rivard and Smith 1982) Maestrojuán et al. 1990	other spelling of name, inaccurate spelling
    Methanogenium thermophilicum Rivard and Smith 1982	homotypic synonym, validly published under the ICNP
    Methanogenium frittonii Harris et al. 1996	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Spring et al. 2005 Spring S, Schumann P, Sproer C. Methanogenium frittonii Harris et al. 1996 is a later synonym of Methanoculleus thermophilus (Rivard and Smith 1982) Maestrojuan et al. 1990. Int J Syst Evol Microbiol 2005; 55:1097-1099. 🇩🇪 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 55, part 3 of the IJSEM. Int J Syst Evol Microbiol 2005; 55:1747-1749.
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏰ According to Spring et al. (2005), this species is an earlier heterotypic synonym of Methanogenium frittonii Harris et al. 1996. Publication: Spring S, Schumann P, Sproer C. Methanogenium frittonii Harris et al. 1996 is a later synonym of Methanoculleus thermophilus (Rivard and Smith 1982) Maestrojuan et al. 1990. Int J Syst Evol Microbiol 2005; 55:1097-1099. 🇩🇪
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 19 times in PubMed until 2026-06-11.
  • 🧍 Nom. corrig.: IJSB 49:250; Methanoculleus thermophilicus (sic). Publication: Zellner G, Boone DR, Keswani J, Whitman WB, Woese CR, Hagelstein A, Tindall BJ, Stackebrandt E. Reclassification of Methanogenium tationis and Methanogenium liminatans as Methanofollis tationis gen. nov., comb. nov. and Methanofollis liminatans comb. nov. and description of a new strain of Methanofollis liminatans. Int J Syst Bacteriol 1999; 49:247-255. 🇩🇪
  • 🧍 The original spelling of the specific epithet, thermophilicus (sic), has been corrected by Zellner et al. 1998. Publication: Zellner G, Messner P, Winter J, Stackebrandt E. Methanoculleus palmolei sp. nov., an irregularly coccoid methanogen from an anaerobic digester treating wastewater of a palm oil plant in north-Sumatra, Indonesia. Int J Syst Bacteriol 1998; 48:1111-1117. 🇩🇪

Parent taxon: Methanoculleus Maestrojuán et al. 1990

Assigned by: Maestrojuán GM, Boone DR, Xun L, Mah RA, Zhang L. Transfer of Methanogenium bourgense, Methanogenium marisnigri, Methanogenium olentangyi, and Methanogenium thermophilicum to the genus Methanoculleus gen. nov., emendation of Methanoculleus marisnigri and Methanogenium and description of new strains of Methanoculleus bourgense and Methanoculleus marisnigri. Int. J. Syst. Bacteriol. 1990; 40:117-122. 🇺🇸

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Record number: 777875