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In zoological nomenclature, the specific name (also specific epithet or species epithet) is the second part (the second name) within the scientific name of a
species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriat ...
(a binomen). The first part of the name of a species is the name of the
genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
or the generic name. The rules and regulations governing the giving of a new species name are explained in the article
species description A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have ...
. For example, the scientific name for humans is ''Homo sapiens'', which is the species name, consisting of two names: ''Homo'' is the " generic name" (the name of the genus) and ''sapiens'' is the "specific name". Historically, ''specific name'' referred to the combination of what are now called the generic and specific names.
Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, ...
, who formalized
binomial nomenclature In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name compos ...
, made explicit distinctions between specific, generic, and trivial names. The generic name was that of the genus, the first in the binomial, the trivial name was the second name in the binomial, and the specific the proper term for the combination of the two. For example the binomial name of the tiger, ''Panthera tigris'':Schenk, E. T. and J. H. McMasters, (Revised by Keen, A. M. and S. W. Muller). 1948. Procedure in Taxonomy. Stanford University Press. Stanford, California. vii, 93 pp. * generic name = ''Panthera'' * trivial name = ''tigris'' * specific name = ''Panthera tigris'' This was the proper usage from the 18th century into the late 20th century, although many authors seemed to be unaware of the distinctions between trivial and specific names and inconsistent and erroneous usage even appeared the International Code of Zoölogical Nomenclature. __TOC__


The grammar of species names

Grammatically, a binomen (and a trinomen, also) must be treated as if it were a
Latin Latin (, or , ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through ...
phrase, no matter which language the words were originally taken from. (This gives some justification to the popular usage of the phrase "Latin name" instead of the more correct phrase "scientific name".) The specific name must adhere to certain conventions of Latin grammar. The specific name can be formed as: * A noun in apposition to the genus name, for example, the scientific name of the lion, ''
Panthera leo The lion (''Panthera leo'') is a large cat of the genus ''Panthera'' native to Africa and India. It has a muscular, broad-chested body; short, rounded head; round ears; and a hairy tuft at the end of its tail. It is sexually dimorphic; adult ...
''. In these cases, the word for the genus and the word for the species do not necessarily have to agree in gender. Species names which are nouns in apposition are sometimes the vernacular name of the organism in Latin or Ancient Greek, or the name (specific or generic) of another organism which the organism itself resembles. * A noun in the
genitive case In grammar, the genitive case ( abbreviated ) is the grammatical case that marks a word, usually a noun, as modifying another word, also usually a noun—thus indicating an attributive relationship of one noun to the other noun. A genitive can a ...
(i.e. belonging to). ** This is common in parasites: '' Xenos vesparum'' ("Stranger of the wasps"). ** Proper nouns which are names of people and places are often used in the genitive case. For example, the name of the coelacanth, '' Latimeria chalumnae'' which means "Latimeria of Chalumna", is a reference to the area near the mouth of the Chalumna River in the Indian Ocean, where the coelacanth was first found, i.e. its type locality. * An adjective which must agree in case and gender with the genus: '' Felis silvestris'' ("the forest cat")


Differences from botany

In botanical nomenclature, "name" ''always'' refers to the ''whole name'' (of a species or otherwise), whereas in zoological nomenclature it can refer to either part of the binomen. Thus '' Hedera helix'' (common ivy, English ivy) is the name of the species; ''Hedera'' is the name of the genus; but ''helix'' is called the specific epithet, ''not'' the specific name. Article 23.1


References

* * {{DEFAULTSORT:Specific Name Zoological nomenclature Epithets