Higher Classification: > Kingdom Animalia > Subkingdom Eumetazoa > Phylum Annelida > Class Clitellata > Subclass Oligochaeta > Order Enchytraeida > Family Enchytraeidae

Cognettia Nielsen & Christensen, 1959

Rank: Genus
Taxon Status: accepted

Relationships towards this taxon

Genus group names

*Chamaedrilus*	Friend, 1913	synonym

Children

Cognettia anomala (Cernosvitov, 1928)
Cognettia clarae Bauer, 1993
Cognettia cognettii (Issel, 1905)
Cognettia glandulosa (Michaelsen, 1888)
Cognettia hibernica Healy, 1975
Cognettia lapponica Nurminen, 1965
Cognettia paxi (Moszynski, 1938)
Cognettia sphagnetorum (Veydovsky, 1878)

Literature

original description	Nielsen, C. O.; Christensen, B. (1959). The Enchytraeidae: critical revision and taxonomy of European species (Studies on Enchytraeidae VII). Natura Jutlandica. 8-9: 1-160.
additional source	Nielsen, C. O., Christensen, B. (1961). The Enchytraeidae. critical revision and taxonomy of European species. Supplement 1. Natura Jutlandica. 10(1): 1-23.
status source	ICZN. (2018). Opinion 2423 (Case 3689) – Cognettia Nielsen & Christensen, 1959 (Annelida, Oligochaeta, Enchytraeidae): conditional precedence given over Euenchytraeus Bretscher, 1906 and Chamaedrilus Friend, 1913. The Bulletin of Zoological Nomenclature. 75(1): 279-281.
status source	Schmelz, R. M.; Collado, R.; Römbke, J. (2015). Case 3689 Cognettia Nielsen & Christensen, 1959 (Annelida, Oligochaeta, enchytraeidae): proposed precedence over Euenchytraeus Bretscher, 1906 and Chamaedrilus Friend, 1913. The Bulletin of Zoological Nomenclature. 72(3): 186-192.
status source	Martinsson, S. (2019). A morphology-based identification key to the Cognettia species of the world (Clitellata: Enchytraeidae). Soil Organisms. 91(2):37-43.

Genbank

Citation

Martin, P.; Reynolds, J.; van Haaren, T. (2025). World List of Marine Oligochaeta. Cognettia Nielsen & Christensen, 1959. Via: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvantidis, C.; Appeltans, W. (2011) European Register of Marine Species, Accessed through PESI at http://www.eu-nomen.eu/portal/taxon.php?GUID=urn:lsid:marinespecies.org:taxname:414970

Dr. Emilia Rota. Cognettia Nielsen & Christensen, 1959. Accessed through: Fauna Europaea at https://portal.cybertaxonomy.org/fauna-europaea/cdm_dataportal/taxon/107c23ae-945a-49c4-8fe1-f4c246a22f9d