// Workers AI · dad joke modeWhat did the Rhizotrichidae say? "We're rooting for you.
| Rhizotrichidae | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Copepoda |
| Order: | Harpacticoida |
| Family: | Rhizotrichidae |
| Synonyms | |
|
Rhizothricidae | |
Rhizotrichidae is a family of crustaceans belonging to the order Harpacticoida.[1] Members of this family are small crustaceans found primarily in marine environments, though some species occur in brackish or freshwater habitats.[2]
Genera and species
[edit]The principal genus within the family is Rhizothrix, originally mentioned by Brady & Robertson in 1876 but formally validated by Sars in 1909, who provided the first proper generic diagnosis. [2]
According to the World Register of Marine Species (WoRMS), accepted species within Rhizothrix include:[2]
- Rhizothrix curvata (Brady, 1880) – type species
- Rhizothrix gracilis (Scott, 1903)
- Rhizothrix longiseta Gómez, 2018
- Rhizothrix minuta (Scott, 1903)
- Rhizothrix pubescens Por, 1959
- Rhizothrix quadriseta Wells, 1967
- Rhizothrix scotti Lang, 1936
- Rhizothrix sejongi Nam & Lee, 2005
- Rhizothrix spinosa Coull, 1971
- Rhizothrix tenella (Wilson, 1932)
- Rhizothrix virginiae Björnberg, 2014
- Rhizothrix wilsoni Bodin, 1979
- Rhizothrix Sars, 1909
- Tryphoema Monard, 1926
Several species historically placed in Rhizothrix have since been reassigned to the genus Tryphoema, including R. bocqueti, R. lusitanica, R. ramabula, and R. scilloniensis. [2]
Taxonomic notes
[edit]The taxonomic history of Rhizothrix is unusually complex. Brady & Robertson (1876) first mentioned the name, but their description did not meet the criteria for availability under the ICZN. Sars (1909) inadvertently corrected this by providing the first valid description, making him the formal author of the genus. This misattribution persisted for decades in the literature.:[1]
Distribution and habitat
[edit]Species of Rhizotrichidae are primarily marine, with some occurring in brackish or freshwater environments. They inhabit benthic substrates, including sediments, algae, and detrital layers. [2]
Research and classification
[edit]- Rhizotrichidae is included in major taxonomic references such as:
- Bodin (1997) Catalogue of the New Marine Harpacticoid Copepods
- Boxshall & Halsey (2004/2005) works on copepod systematics
- Huys (2001, 2009) analyses of harpacticoid nomenclature
These works contribute to the modern understanding of the family's classification and species boundaries.[3][4]
Rhizothrix tenella (Wilson, 1932)
[edit]A well‑documented species within the family, R. tenella is recognized as an accepted taxon in the PESI and World of Copepods databases. It is strictly marine and has been referenced in multiple biodiversity catalogues.[5]
References
[edit]- 1 2 "Rhizotrichidae". www.gbif.org. Retrieved 23 June 2021.
- 1 2 3 4 5 "WoRMS - World Register of Marine Species - Rhizothrix Brady & Robertson, 1876". www.marinespecies.org. Retrieved 2026-06-26.
- ↑ "Rhizothrix". www.gbif.org. Retrieved 2026-06-26.
- ↑ "Rhizothricidae". www.gbif.org. Archived from the original on 2025-08-14. Retrieved 2026-06-26.
- ↑ "PESI portal - Rhizothrix tenella (Wilson C.B., 1932)". www.eu-nomen.eu. Retrieved 2026-06-26.
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