SeqCode Registry
Register List https://seqco.de/r:n-pu7le5 [2026]

Grelliella numerosa gen. nov. sp. nov.

Submitted by Nguyen, Huong

Genus Grelliella

Etymology
[Grel.li.el'la] N.L. fem. dim. n. Grelliella, named after Karl G. Grell who rediscovered the placozoans
Nomenclatural type
Species Grelliella numerosaTs
Description
  • Boscaro et al., 2019: Ca. Bandiella numerosa proposed; 16S rRNA gene sequence provided (accession LR585349.1).
  • Gruber-Vodicka et al., 2019: Ca. Grellia incantans proposed; raw reads provided. Note: assembled genome is not available in Genbank/EMBL/DDBJ (as of October 2026) and thus is ineligible to serve as a type genome under the SeqCode.
  • Oren & Garrity, 2021: Ca. Grellia incantans renamed Ca. Grelliella incantans
  • Giannotti et al., 2022: Proposal to reclassify Ca. Bandiella numerosa as Ca. Grellia numerosa (sic); whole genome sequence provided (accession JAJBJD000000000).
  • George et al., 2023: Additional genome sequence for Ca. Grellia numerosa (sic) (accession CP104164.1)
Classification
Bacteria » Pseudomonadota » Alphaproteobacteria » Rickettsiales » “Midichloriaceae” » Grelliella
References
Effective publication: Giannotti et al., 2022 [1]
Original (not valid) publication: Gruber-Vodicka et al., 2019 [2]
Corrigendum: Oren, Garrity, 2021 [3] (from “Grellia”)
Registry URL
https://seqco.de/i:34326

Species Grelliella numerosaTs

Etymology
[nu.me.ro'sa] L. fem. adj. numerosa, numerous
Nomenclatural type
Genome sc|0006302 Ts
Description
  • Boscaro et al., 2019: Ca. Bandiella numerosa proposed; 16S rRNA gene sequence provided (accession LR585349.1).
  • Oren & Garrity, 2021: Ca. Grellia renamed Ca. Grelliella 
  • Giannotti et al., 2022: Proposal to reclassify Ca. Bandiella numerosa as Ca. Grellia numerosa (sic); whole genome sequence provided (accession JAJBJD000000000).
  • George et al., 2023: Additional genome sequence for Ca. Grellia numerosa (sic) (accession CP104164.1)
Classification
Bacteria » Pseudomonadota » Alphaproteobacteria » Rickettsiales » “Midichloriaceae” » Grelliella » Grelliella numerosaTs
References
Effective publication: Giannotti et al., 2022 [1]
Original (not valid) publication: Boscaro et al., 2019 [4]
Corrigendum: Oren, Garrity, 2021 [3] (from “Grellia numerosa”)
Assigned taxonomically: Giannotti et al., 2022 [1]
Registry URL
https://seqco.de/i:56533

References

  1. Giannotti et al. (2022). The “Other” Rickettsiales : an Overview of the Family “ Candidatus Midichloriaceae”. Applied and Environmental Microbiology. DOI: 10.1128/aem.02432-21
  2. Gruber-Vodicka et al. (2019). Two intracellular and cell type-specific bacterial symbionts in the placozoan Trichoplax H2. Nature Microbiology. DOI: 10.1038/s41564-019-0475-9
  3. Oren, Garrity (2021). Candidatus List No. 2. Lists of names of prokaryotic Candidatus taxa. International Journal of Systematic and Evolutionary Microbiology. DOI: 10.1099/ijsem.0.004671
  4. Boscaro et al. (2019). Symbionts of the ciliate Euplotes : diversity, patterns and potential as models for bacteria–eukaryote endosymbioses. Proceedings of the Royal Society B: Biological Sciences. DOI: 10.1098/rspb.2019.0693

Register List Certificate of Validation

On behalf of the Committee on the Systematics of Prokaryotes Described from Sequence Data (SeqCode Committee), we hereby certify that the Register List seqco.de/r:n-pu7le5 submitted by Nguyen, Huong and including 2 new names has been successfully validated.


Date of Priority: 2026-10-17 09:09 UTC
DOI: 10.57973/seqcode.r:n-pu7le5