NCBI
NCBI Taxonomy taxdump · 2026-10-23taxid: 138072
Bacteria > Pseudomonadota > Gammaproteobacteria > Enterobacterales > Enterobacteriaceae > Candidatus Williamhamiltonella > Candidatus Williamhamiltonella defendens
Candidatus Williamhamiltonella defendens
Species in genus Candidatus Williamhamiltonella, family Enterobacteriaceae (order Enterobacterales). (from NCBI Taxonomy lineage)
Names over time
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Cross-database view
GTDB
Hamiltonella defendens
id: s__Hamiltonella defendens · GTDB R232
Database's species id. At its weakest, linked by GTDB's own NCBI species id rather than the genome's raw one.
d__Bacteria;p__Pseudomonadota;c__Gammaproteobacteria;o__Enterobacterales;f__Enterobacteriaceae;g__Hamiltonella;s__Hamiltonella defendens
Renamed: GTDB gives this taxon a different name in R207, R214, R220, R226, R232.
SILVA
Candidatus Hamiltonella defensa
id: AJ297720 · SILVA 138.2
Walked up to species. At its weakest, linked by walking up 2 levels from a strain or subspecies record to the species.
Bacteria;Pseudomonadota;Gammaproteobacteria;Enterobacterales;Morganellaceae;Candidatus Hamiltonella;
Greengenes2
Hamiltonella defensa
id: Hamiltonella defensa · Greengenes2 2024.09
Genome accession. Linked via GTDB R220 genome accessions — the same physical genomes, not a name match.
d__Bacteria; p__Pseudomonadota; c__Gammaproteobacteria; o__Enterobacterales_737866; f__Enterobacteriaceae_A_729055; g__Hamiltonella; s__Hamiltonella defensa
eHOMD
Release 4.2No record in eHOMD 4.2.
Each panel shows one release. Switch a release to see how that database's answer changes — the taxon is held fixed by NCBI taxid, so every panel describes the same organism. Each panel also says how it was linked; how the databases are joined explains the routes.
Lineage by rank
| Rank | NCBI | GTDB R232 | SILVA 138.2 | Greengenes2 2024.09 |
|---|---|---|---|---|
| domain | Bacteria | Bacteria | Bacteria | Bacteria |
| phylum | Pseudomonadota | Pseudomonadota | Pseudomonadota | Pseudomonadota |
| class | Gammaproteobacteria | Gammaproteobacteria | Gammaproteobacteria | Gammaproteobacteria |
| order | Enterobacterales | Enterobacterales | Enterobacterales | first rank that differs from NCBI: Enterobacterales_737866 |
| family | Enterobacteriaceae | Enterobacteriaceae | first rank that differs from NCBI: Morganellaceae | Enterobacteriaceae_A_729055 |
| genus | Candidatus Williamhamiltonella | first rank that differs from NCBI: Hamiltonella | Candidatus Hamiltonella | Hamiltonella |
| species | Candidatus Williamhamiltonella defendens | Hamiltonella defendens | — | Hamiltonella defensa |
Each column is the release its box shows. marks the first rank at which a database's name differs from NCBI's, by exact text; a suffix such as _A counts. SILVA's path and eHOMD's columns end at genus, so their species row is blank; the box above names the species. Levels a source labels outside these seven ranks are in the API's ranks and not drawn here.
Names in NCBI
from NCBI Taxonomy taxdump · 2026-10-23- Candidatus Williamhamiltonella defendenscurrent
- Candidatus Consessor aphidicolasynonym
- "Candidatus Consessoris aphidicola" Darby et al. 2005synonym
- "Candidatus Hamiltonella defensa" Moran et al. 2005synonym
- "Candidatus Williamhamiltonia defensens" corrig. Moran et al. 2005synonym
- Consessor aphidicolaequivalent
- Williamhamiltonella defendensequivalent
Other names in these databases
GTDB R232
- Hamiltonella defendens
- Hamiltonella defensa_A
SILVA 138.2
- Candidatus Hamiltonella defensa
- Candidatus Hamiltonella defensa (Bemisia tabaci)
- Candidatus Hamiltonella defensa MED (Bemisia tabaci)