biology Biology is the scientific study of life and living organisms. It is a broad natural science that encompasses a wide range of fields and unifying principles that explain the structure, function, growth, History of life, origin, evolution, and ...

, a tribe is a

taxonomic rank In biology, taxonomic rank (which some authors prefer to call nomenclatural rank because ranking is part of nomenclature rather than taxonomy proper, according to some definitions of these terms) is the relative or absolute level of a group of or ...

above

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

, but below

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

and

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

. It is sometimes subdivided into

subtribe Subtribe is a taxonomic category ranking which is below the rank of tribe and above genus. The standard suffix for a subtribe is -ina (in animals) or -inae (in plants). The first use of this word dates back to the late 19th century. An example of ...

s. By convention, all

taxa In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and ...

ranked above species are capitalized, including both tribe and subtribe. In

zoology Zoology ( , ) is the scientific study of animals. Its studies include the anatomy, structure, embryology, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and ...

, the standard ending for the name of a zoological tribe is "-ini". Examples include the tribes Caprini (goat-antelopes),

Hominini The Hominini (hominins) form a Tribe (biology), taxonomic tribe of the subfamily Homininae (hominines). They comprise two extant genera: ''Homo'' (humans) and ''Pan (genus), Pan'' (chimpanzees and bonobos), and in standard usage exclude the gen ...

(hominins),

Bombini The Bombini are a tribe of large bristly apid bees which feed on pollen or nectar. Many species are social, forming nests of up to a few hundred individuals; other species, formerly classified as ''Psithyrus'' cuckoo bees, are brood parasites of ...

(bumblebees), and Thunnini (tunas). The tribe Hominini is divided into subtribes by some scientists; subtribe Hominina then comprises "humans". The standard ending for the name of a zoological subtribe is "-ina". In

botany Botany, also called plant science, is the branch of natural science and biology studying plants, especially Plant anatomy, their anatomy, Plant taxonomy, taxonomy, and Plant ecology, ecology. A botanist or plant scientist is a scientist who s ...

, the standard ending for the name of a botanical tribe is "-eae". Examples include the tribes Acalypheae and Hyacintheae. The tribe Hyacintheae is divided into subtribes, including the subtribe Massoniinae. The standard ending for the name of a botanical subtribe is "-inae". In

bacteriology Bacteriology is the branch and specialty of biology that studies the Morphology (biology), morphology, ecology, genetics and biochemistry of bacteria as well as many other aspects related to them. This subdivision of microbiology involves the iden ...

, the form of tribe names is as in botany, e.g., Pseudomonadeae, based on the genus name ''

Pseudomonas ''Pseudomonas'' is a genus of Gram-negative bacteria belonging to the family Pseudomonadaceae in the class Gammaproteobacteria. The 348 members of the genus demonstrate a great deal of metabolic diversity and consequently are able to colonize a ...

''.

Rank recognition

An unfamiliar taxonomic rank cannot necessarily be identified as a tribe merely by the presence of one of the standard suffixes: * zoological ''-ini'' uniquely suffixes the animal tribe Article 29 * zoological ''-ina'' uniquely suffixes the animal subtribe * zoological ''-inae'' uniquely suffixes the animal subfamily * botanical ''-eae'' also suffixes class ''-phyceae'', suborder ''-ineae'', family ''-aceae'', and subfamily ''-oideae'' (these additional ''-eae'' ranks are present in bacteria, plants, algae, and fungi, but not animals) Article 16 Article 19 Accordingly, working within animals alone, subfamily ''-inae'', tribe -ini, and subtribe ''-ina'' are unique suffixes to their specific taxonomic ranks. At the other extreme, working within algae alone, ''-eae'' suffixes class ''-phyceae'', suborder ''-ineae'', family ''-aceae'', subfamily ''-oideae'', and tribe ''-eae''. The longer suffixes themselves suffixed with ''-eae'' must first be eliminated before recognizing an unfamiliar ''-eae'' designation as belonging to rank tribe.

Notes

References

{{Taxonomic ranks Bacterial nomenclature

Tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide use of the term in English is in the discipline of anthropology. The definition is contested, in part due to conflict ...

Plant taxonomy rank16

Rank recognition

See also

Notes

References