Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous

nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant- parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a bro ...

s living in soil. The

Cephalobidae Cephalobidae is a family of nematodes belonging to the order Rhabditida Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, an ...

, Panagrolaimidae, Steinernematidae, and

Strongyloididae Strongyloididae is a family of nematodes belonging to the order Rhabditida. Genera: * '' Leipernema'' Narayan Singh, 1976 * '' Parastrongyloides'' Morgan, 1928 * ''Strongyloides ''Strongyloides'' (from Greek ''strongylos'', round, + ''eidos'' ...

seem to be closer to the Tylenchia, regardless of whether these are merged with the

Rhabditia Subclass Rhabditia is mostly composed of parasitic nematodes (particularly in the Strongylida), though there are some free-living species as well (particularly in the Rhabditida). Phasmids (posterior sensory structures) are well-developed, whil ...

or not.

Tree of Life Web Project The Tree of Life Web Project is an Internet project providing information about the diversity and phylogeny of life on Earth. This collaborative peer reviewed project began in 1995, and is written by biologists from around the world. The site ...

(2002b)
Nematoda
Version of 2002-JAN-01. Retrieved 2008-NOV-02.

Families

Rhabditida * Myolaimina **''

Incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertain ...

'' *** Myolaimoidea ****

Myolaimidae Myolaimidae is a family of nematodes in the order Rhabditida Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Strongy ...

Rhabditina Subclass Rhabditia is mostly composed of parasitic nematodes (particularly in the Strongylida), though there are some free-living species as well (particularly in the Rhabditida). Phasmids (posterior sensory structures) are well-developed, while ...

** Bunonematomorpha *** Bunonematoidea ****

Bunonematidae Bunonematidae is a family of nematodes in the order Rhabditida Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, and Stron ...

** Diplogasteromorpha *** Cylindrocorporoidea ****

Cylindrocorporidae Cylindrocorporidae is a family of nematodes belonging to the order Diplogasterida Diplogasterida was an order of nematodes. It was sometimes placed in a monotypic subclass Diplogasteria, but molecular phylogenetic evidence has shown it to be em ...

*** Diplogasteroidea ****

Cephalobiidae Diplogastridae, formerly Diplogasteridae, are a family of nematodes (roundworms) known from a wide range of habitats, often in commensal or parasitic associations with insects. Description Diplogastrid nematodes are characterized by a distinct ...

****

Diplogasteridae Diplogastridae, formerly Diplogasteridae, are a family of nematodes (roundworms) known from a wide range of habitats, often in commensal or parasitic associations with insects. Description Diplogastrid nematodes are characterized by a distinct ...

****

Diplogasteroididae Diplogasteroididae is a family of nematodes belonging to the order Diplogasterida Diplogasterida was an order of nematodes. It was sometimes placed in a monotypic subclass Diplogasteria, but molecular phylogenetic evidence has shown it to be em ...

** Rhabditomorpha *** Mesorhabditoidea ****

Peloderidae The Rhabditidae are a family of nematodes which includes the model organism ''Caenorhabditis elegans''. Genera ''Bursilla'' *'' Bursilla monhysteria'' (Butschli, 1873) ''Caenorhabditis'' *'' Caenorhabditis brenneri'' Sudhaus & Kiontke, 2007 ...

*** Rhabditoidea ****

Rhabditidae The Rhabditidae are a family of nematodes which includes the model organism ''Caenorhabditis elegans''. Genera ''Bursilla'' *''Bursilla monhysteria'' (Butschli, 1873) ''Caenorhabditis'' *''Caenorhabditis brenneri'' Sudhaus & Kiontke, 2007 *' ...

* Spirurina ** Ascaridomorpha *** Ascaridoidea **** Acanthocheilidae ****

Anisakidae The Anisakidae are a family of intestinal nematodes (roundworms). The larvae of these worms can cause anisakiasis when ingested by humans, in raw or insufficiently cooked fish. Anisakidae worms can infect many species of fish, birds, mammals and ...

****

Ascarididae The Ascarididae are a family of the large intestinal nematoda, roundworms. Members of the family are intestinal parasites, infecting all class (biology), classes of vertebrates. It includes a number of genus, genera,Anderson RC (2000)''Nematode Pa ...

**** Heterocheilidae **** Raphidascarididae *** Cosmocercoidea **** Atractidae **** Kathlaniidae *** Seuratoidea **** Cucullanidae **** Quimperiidae ** Gnathostomatomorpha *** Gnathostomatoidea **** Gnathostomatidae ** Oxyuridomorpha *** Oxyuroidea **** Pharygnodonidae *** Thelastomatoidea **** Thelastomatidae ** Spiruromorpha ***

Acuarioidea Acuariidae is a family of spirurian nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system. They are the only family in superfamily Acuarioidea, and number about 40 genera and 300 species, most of which are p ...

****

Acuariidae Acuariidae is a family of spirurian nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system. They are the only family in superfamily Acuarioidea, and number about 40 genera and 300 species, most of which are parasi ...

*** Camallanoidea ****

Camallanidae Camallanidae is a family of nematodes belonging to the order Camallanida The Camallanida are an order of nematodes. * Parasites of terrestrial and aquatic vertebrates * Copepods as obligatory secondary hosts They are sometimes included ...

*** Filarioidea **** Onchocercidae ***

Habronematoidea Habronematoidea is a superfamily of spirurian nematodes in the large order Spirurida Spirurida is an order of spirurian nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system. Some Spirurida, like the genu ...

****

Cystidicolidae Cystidicolidae is a family of spirurian nematodes. It was created by Skrjabin in 1946. All members of the family are parasites of fish. Systematics According to the World Register of Marine Species, the family Cystidicolidae includes the f ...

****

Tetrameridae Tetrameridae is a family of spirurian nematodes. It is the smallest of the large genera making up the bulk of the superfamily Habronematoidea. Like all nematodes, they have neither a circulatory nor a respiratory system. They are parasites, ch ...

*** Physalopteroidea ****

Physalopteridae Physalopteridae is a family of spirurian nematodes,Railliet, A. (1893). Traité de Zoologie Médicale et Agricole. Deuxième Édition. Asselin et Houzeau, Paris which belongs to the superfamily Physalopteroidea. Like all nematodes, they have ne ...

***

Thelazioidea Thelazioidea is a superfamily of spirurian nematodes in the large order Spirurida Spirurida is an order of spirurian nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system. Some Spirurida, like the genus ' ...

****

Rhabdochonidae Rhabdochonidae is a family of nematodes belonging to the order Rhabditida Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae, ...

* Tylenchina ** Cephalobomorpha *** Cephaloboidea ****

** Drilonematomorpha *** Drilonematoidea **** Drilonematidae **** Homungellidae **** Ungellidae ** Panagrolaimomorpha *** Panagrolaimoidea **** Panagrolaimidae *** Strongyloidoidea ****

Alloionematidae Alloionematidae is a family of nematodes belonging to the order Rhabditida Rhabditida is an order of free-living, zooparasitic, and phytoparasitic microbivorous nematodes living in soil. The Cephalobidae, Panagrolaimidae, Steinernematidae ...

** Tylenchomorpha *** Aphelenchoidea ****

Aphelenchidae Aphelenchidae is a family of nematodes belonging to the order Aphelenchida Aphelenchida is a moderately large order of nematodes. Aphelenchida have a stylet for feeding and a very prominent median bulb in the oesophagus. They are cosmopolita ...

****

Aphelenchoididae Aphelenchoididae is a nematode family in the order Aphelenchida. List of genera Subfamily Anomyctinae * Genus '' Anomyctus'' Subfamily Aphelenchoidinae'' * Genus ''Aphelenchoides ''Aphelenchoides'' is a genus of mycetophagous nematodes. ...

*** Criconematoidea **** Criconematidae **** Hemicycliophoridae *** Sphaerularioidea ****

Anguinidae Anguinidae is a family of nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant- parasitic nematodes also known as eelworms. They are ...

**** Neotylenchidae ***

Tylenchoidea Tylenchoidea is a superfamily of roundworms. Its members are either plant parasites Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some ha ...

****

Belonolaimidae Belonolaimidae is a family of nematodes belonging to the order Tylenchida Tylenchida is an order of nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelm ...

****

Dolichodoridae Dolichodoridae is a family of nematodes belonging to the order Tylenchida Tylenchida is an order of nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelm ...

****

Hoplolaimidae Hoplolaimidae is a family of plant pathogenic nematodes. It has two subfamilies, Hoplolaiminae and Rotylenchulinae. Typically hoplolaimids are ecto- or semi endoparasites of higher plants. Subfamilies and genera in Hoplolaimidae Type subfamily ...

****''Incertae sedis'' *****'' Deladenus'' Thorne, 1941 *****'' Paratylenchus'' Micoletzky, 1922 *****'' Radopholus'' Thorne, 1949 *****'' Tylenchorhynchus'' Cobb, 1913 ****

Pratylenchidae Pratylenchidae is a family of plant pathogenic nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant- parasitic nematodes also known as ...

****

Tylenchidae Tylenchidae is a family of nematode The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant- parasitic nematodes also known as eelworms. They are a ...

References

Nematode orders {{rhabditida-stub