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-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhab ...

s living in soil. The Cephalobidae, Panagrolaimidae,

Steinernematidae The Steinernematidae are a family of nematodes in the order Rhabditida. Nematodes of the genus ''Steinernema'' are obligate insect parasites that inhabit soil. ''Xenorhabdus'' bacteria occupy nematode insecticide and synergistically kill, dig ...

, and Strongyloididae 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 h ...

(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, uncertainty ...

'' *** 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, whil ...

** 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 Strong ...

** 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 ****

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 distinc ...

****

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, 20 ...

*** 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 ''Heterocheila'' is a genus of acalyptrate true flies (Diptera). They are placed in their own family, Heterocheilidae, in the superfamily Sciomyzoidea. They are not widely familiar outside entomological circles, but the common name "half-bridge ...

**** Raphidascarididae *** Cosmocercoidea ****

Atractidae Atractidae is a family of nematodes belonging to the order Rhabditida. Genera Genera: * ''Atractis'' Dujardin, 1845 * ''Buckleyatractis'' Khalil & Gibbons, 1988 * ''Cobboldina'' Leiper, 1911 * ''Crossocephalus'' Railliet, 1909 * ''Cyrtosomum'' ...

****

Kathlaniidae Kathlaniidae is a nematode family in the superfamily Cosmoceroidea. References External links Rhabditia Nematode families {{Chromadorea-stub ...

*** Seuratoidea **** Cucullanidae ****

Quimperiidae Quimperiidae 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 ...

** Gnathostomatomorpha *** Gnathostomatoidea **** Gnathostomatidae ** Oxyuridomorpha *** Oxyuroidea **** Pharygnodonidae *** Thelastomatoidea ****

Thelastomatidae Thelastomatidae is a family of nematodes belonging to the order Oxyurida Oxyurida is an order of nematode worms of the class Secernentea. It consists of four families, one of which contains the human pinworm (''Enterobius vermicularis''). ...

** 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 par ...

****

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. Genera Genera: * '' Camallanides'' Baylis & Daubney, 1922 * ''Camallanus ''Camallanus'' is a genus of parasitic roundworms in the family Camallanidae. '' Camallanus ...

***

Filarioidea The Filarioidea are a superfamily of highly specialised parasitic nematodes. Species within this superfamily are known as filarial worms or filariae (singular filaria). Infections with parasitic filarial worms cause disease conditions generica ...

****

Onchocercidae The Onchocercidae are a family of nematodes in the superfamily Filarioidea. This family includes some of the most devastating human parasitic diseases, such as lymphatic filariasis, onchocerciasis, loiasis, and other filariases. Representativ ...

***

Habronematoidea Habronematoidea is a superfamily of spirurian nematodes in the large order Spirurida. Like all nematodes, they have neither a circulatory nor a respiratory system. Though none of the families placed here are overly diverse, they are quite lar ...

**** Cystidicolidae **** Tetrameridae *** Physalopteroidea ****

Physalopteridae Physalopteridae is a family (biology), family of spirurian nematodes,Railliet, A. (1893). Traité de Zoologie Médicale et Agricole. Deuxième Édition. Asselin et Houzeau, Paris which belongs to the Taxonomic rank, superfamily Physalopteroidea. ...

***

Thelazioidea Thelazioidea is a superfamily of spirurian nematodes in the large order Spirurida. Like all nematodes, they have neither a circulatory nor a respiratory system. Among the families placed here, only the Rhabdochonidae are notably diverse. tho ...

**** Rhabdochonidae * Tylenchina ** Cephalobomorpha *** Cephaloboidea **** Cephalobidae ** Drilonematomorpha *** Drilonematoidea **** Drilonematidae ****

Homungellidae Homungellidae 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, ...

****

Ungellidae Ungellidae 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, and ...

** 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 cosmopolit ...

****

Aphelenchoididae Aphelenchoididae is a nematode family in the order Aphelenchida. List of genera Subfamily Anomyctinae * Genus '' Anomyctus'' Subfamily Aphelenchoidinae'' * Genus '' Aphelenchoides'' * Genus '' Ficophagus'' * Genus '' Laimaphelenchus'' * Ge ...

*** Criconematoidea ****

Criconematidae Criconematidae is a family of nematodes belonging to the order Tylenchida Tylenchida is an order of nematodes. List of families * Superfamily Criconematoidea ** Family Criconematidae ** Family Tylenchulidae * Superfamily Tylencho ...

**** 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 h ...

****

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 ectoparasite, ecto- or semi endoparasites of higher plants. Subfamilies and genera in Hoplolaimidae Ty ...

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

Pratylenchidae Pratylenchidae is a family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of it ...

****

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