CalCOFI.io CalCOFI.io open data ecosystem

Thysanoessa gregaria

Speciesaccepted · checked 2026-08-05WoRMS 110707ITIS 95572key worms:110707
i

2026-08-05: itis_id 95572 via WoRMS external link

CalCOFI holds 12,299 observations of it in 1 dataset between 1951 and 2019, as juvenile, adult, furcilia and 12 more stages.R

12,299
observations
12,299
records
5,579
sampling events
1951–2019
years
1
datasets
juvenile · adult · furcilia · furcilia F3 · calyptopis · damaged · furcilia F4 · furcilia F6 · furcilia F2 · furcilia F1 · furcilia F5 · calyptopis C3 · calyptopis C2 · larvae · calyptopis C1
life stages
1.6 cm
max length
Silhouette · Gabriela Palomo-Munoz · CC BY 4.0 · PhyloPic, drawn from Thysanoessa raschii

Observed in 1 dataset
i

One row per dataset, and beside it one cell per year, darker with more observations — the same strip the front door draws per dataset. Each row ends with the name that dataset uses (dataset_taxon); the accepted name is written once, in the title above. A quiet pill marks a name the authority does not accept.

  • 12,299 obs5,579 events1951–2019juvenile · adult · furcilia · furcilia F3 · calyptopis · damaged · furcilia F4 · furcilia F6 · furcilia F2 · furcilia F1 · furcilia F5 · calyptopis C3 · calyptopis C2 · larvae · calyptopis C1
    name used: Thysanoessa gregaria · code 28

Ways inExplorerdb-queryERDDAPRPythonThis page as JSON

Code and endpoints ERDDAP · R · Python · JSON
ERDDAPCalCOFI's own server, the Euphausiids (Krill) table constrained to this taxon
https://erddap.calcofi.io/erddap/tabledap/cce-lter_euphausiids.html?&taxon_key=%22worms:110707%22

Read from taxa.json of release v2026.10.21, written at release by calcofi4db::build_taxa_catalog(). The catalog's index is /species/.

How big is it 1.6 cm max
Thysanoessa gregaria1.6 cm
US quarter2.4 cm

max · worms_attribute

Every mark is a measured length with its own source — hover one to read it. The reference objects are _data/size_reference.csv: two of them, the 505 µm bongo mesh and the net's ring, are CalCOFI's own sampling gear.

Life stages juvenile · adult · furcilia · furcilia F3 · calyptopis · damaged · furcilia F4 · furcilia F6 · furcilia F2 · furcilia F1 · furcilia F5 · calyptopis C3 · calyptopis C2 · larvae · calyptopis C1
  • Euphausiids (Krill) juvenile · adult · furcilia · furcilia F3 · calyptopis · damaged · furcilia F4 · furcilia F6 · furcilia F2 · furcilia F1 · furcilia F5 · calyptopis C3 · calyptopis C2 · larvae · calyptopis C1

The stages each dataset records for it, from the release's obs_bio.life_stage. Their lengths are under How big is it.

Lineage 11 ranks · Biota to Thysanoessa
Credits silhouette · length
  • Silhouette · Gabriela Palomo-Munoz · CC BY 4.0 · PhyloPic, drawn from Thysanoessa raschii · source
  • Length · worms_attribute
Elsewhere Wikidata · iNaturalist · GBIF

WikidataiNaturalistGBIF

The same organism on the services the faces were fetched from; the authorities' own pages are the ids in the head.

Cite the release, v2026.10.21

Cite the release, v2026.10.21; each dataset's own citation, licence and DOI are on its page. How to cite ↗