sea urchin crab
Echinoecus pentagonus (A. Milne-Edwards, 1879)
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Identity & source status
- Scientific name
- Echinoecus pentagonus (A. Milne-Edwards, 1879)
- Name authority
- (A. Milne-Edwards, 1879)
- Common name
- sea urchin crab
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Malacostraca
- Order
- Decapoda
- Family
- Pilumnidae
- Genus
- Echinoecus
- Extinction status
- Recorded extant
Source habitat flags: Marine: yes · Freshwater: no · Terrestrial: no. These do not form a complete habitat description.
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumArthropoda
- subphylumCrustacea
- classMalacostraca
- orderDecapoda
- suborderPleocyemata
- infraorderBrachyura Latreille, 1802
- section zoologyEubrachyura de Saint Laurent, 1980
- subsection zoologyHeterotremata Guinot, 1977
- superfamilyPilumnoidea Samouelle, 1819
- familyPilumnidae Samouelle, 1819
- subfamilyEumedoninae Dana, 1852
- genusEchinoecus Rathbun, 1894
- speciesEchinoecus pentagonus (A. Milne-Edwards, 1879)
Close classified relatives
These entries share the source’s genus, Echinoecus. They are not necessarily the closest relatives established by molecular evidence.
| Species | Classification | Source status |
|---|---|---|
| Echinoecus nipponicus Miyake, 1939 | PilumnidaeArthropoda | Accepted speciesRecorded extant |
Names & synonyms
Names explicitly linked to this accepted taxon in the source. Synonymy can change with revision.
| Recorded name | Source status |
|---|---|
| Echinoecus pentagonus Rathbun, 1894 Rathbun, 1894 | synonym |
| Echinoecus rathbunae Miyake, 1939 Miyake, 1939 | synonym |
| Eumedon pentagonus A. Milne-Edwards, 1879 A. Milne-Edwards, 1879 | synonym |
| Eumedonus petiti Gravier, 1922 Gravier, 1922 | synonym |
| Liomedon pentagonus Klunzinger, 1906 Klunzinger, 1906 | synonym |
| Echinoecus petiti (Gravier, 1923) (Gravier, 1923) | synonym |
| Echinoecus klunzingeri Miyake, 1939 Miyake, 1939 | synonym |
| Eumedon convictor Bouvier & Seurat, 1905 Bouvier & Seurat, 1905 | synonym |
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- https://www.marinespecies.org/aphia.php?p=taxdetails&id=442367 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:38HWR. Classification follows source parent identifiers. English common names may vary by region.