Brachyura

crabs

Infraorderaccepted · checked 2026-08-05WoRMS 106673ITIS 98276key worms:106673

2026-08-05: itis_id 98276 via WoRMS external link

Brachyura is an infraorder of decapod crustaceans comprising the true crabs. They typically have a very short projecting tail-like abdomen, usually hidden entirely under the thorax.W CalCOFI holds 149 observations of it in 1 dataset between 1984 and 2014, across 2 taxa under it.R

149
observations: 836
records: 1984–2014
years: 1
datasets: 1
species under it

Photo · Annika Lindqvist · CC BY 4.0 · inat

Observed in nothing keyed to it directly

Every observation under it belongs to one of the taxa under it — 1 taxon, in the fold below.

Ways inExplorer db-query R Python This page as JSON

Code and endpoints R · Python · JSON

library(calcofi4r)
con <- cc_get_db()                      # the promoted release
tbl(con, "obs_bio") |> filter(taxon_key == "worms:106673")

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 not on record

Not on record: no authority the fetcher reads carries a length for this taxon (a genus page could show the range of its species).

Under it 1 taxon

sec Eubrachyura836

Lineage 10 ranks · Biota to Pleocyemata

Credits silhouette · photo · text

Silhouette · T. Michael Keesey · Public Domain Mark · PhyloPic, drawn from Dicranodromia mahieuxii · source
Photo · Annika Lindqvist · CC BY 4.0 · inat · source
Text · Wikipedia, “Brachyura” · CC BY-SA 4.0 · revision 1374017511

Elsewhere Wikidata · iNaturalist

Wikidata iNaturalist

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 ↗