Name: Ralstonia insidiosa Coenye et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: in.si.di.o’sa. L. fem. adj. insidiosa, deceitful, dangerous, referring to the fact that these seemingly harmless environmental organisms can be isolated from, and possibly cause infection in, humans

Pronunciation (Latin), gender: ral-STO-ni-a in-si-di-O-sa, feminine

Type strain: AU2944; CCUG 46789; DSM 17714; LMG 21421

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF488779 Analyse FASTA

Valid publication: Coenye T, Goris J, De Vos P, Vandamme P, LiPuma JJ. Classification of Ralstonia pickettii-like isolates from the environment and clinical samples as Ralstonia insidiosa sp. nov. Int J Syst Evol Microbiol 2003; 53:1075-1080. 🇧🇪

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 4 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:1703-1705.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Emendations:
  • Vaneechoutte et al. 2004 Vaneechoutte M, Kampfer P, De Baere T, Falsen E, Verschraegen G. Wautersia gen. nov., a novel genus accommodating the phylogenetic lineage including Ralstonia eutropha and related species, and proposal of Ralstonia [Pseudomonas] syzygii (Roberts et al. 1990) comb. nov. Int J Syst Evol Microbiol 2004; 54:317-327. 🇧🇪 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 2 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:1007-1009.

• Notes:
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1, note = "+". — 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 49 times in PubMed until 2026-06-11.
  • 🪓 Organisms assigned to this species have previously been classified as Ralstonia pickettii (Ralston et al. 1973) Yabuuchi et al. 1996. Publication: Yabuuchi E, Kosako Y, Yano I, Hotta H, Nishiuchi Y. Transfer of two Burkholderia and an Alcaligenes species to Ralstonia gen. Nov.: Proposal of Ralstonia pickettii (Ralston, Palleroni and Doudoroff 1973) comb. Nov., Ralstonia solanacearum (Smith 1896) comb. Nov. and Ralstonia eutropha (Davis 1969) comb. Nov. Microbiol Immunol 1995; 39:897-904. 🇯🇵 Anonymous. Validation list no. 57. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1996; 46:625-626.
  • 🫡 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus. This name is not taxonomically suspended any more in favour of Ralstonia pickettii (Ralston et al. 1973) Yabuuchi et al. 1996. Publication: Yabuuchi E, Kosako Y, Yano I, Hotta H, Nishiuchi Y. Transfer of two Burkholderia and an Alcaligenes species to Ralstonia gen. Nov.: Proposal of Ralstonia pickettii (Ralston, Palleroni and Doudoroff 1973) comb. Nov., Ralstonia solanacearum (Smith 1896) comb. Nov. and Ralstonia eutropha (Davis 1969) comb. Nov. Microbiol Immunol 1995; 39:897-904. 🇯🇵 Anonymous. Validation list no. 57. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1996; 46:625-626.

Parent taxon: Ralstonia Yabuuchi et al. 1996

Assigned by: Coenye T, Goris J, De Vos P, Vandamme P, LiPuma JJ. Classification of Ralstonia pickettii-like isolates from the environment and clinical samples as Ralstonia insidiosa sp. nov. Int J Syst Evol Microbiol 2003; 53:1075-1080. 🇧🇪

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Record number: 780315