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 (a binomen). The first part of the name of a species is the name of the genus or the generic name. The rules and regulations governing the giving of a new species name are explained in the article species description.
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".
The grammar of species names
Grammatically, a binomen (and a trinomen, also) must be treated as if it were a Latin 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".) Grammatically (using Latin grammar), the specific name must adhere to certain conventions. 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. 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.
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 the specific epithet, not the specific name.
Banks, Nathan (2009). The Entomological Code. a Code of Nomenclature for Use in Entomology. BiblioBazaar. ISBN 1-113-26677-5.
Matthews, Janice R.; Bowen, John M.; Matthews, Robert W. (2000). Successful scientific writing: a step-by-step guide for the biological and medical sciences. Cambridge University Press. p. 176. ISBN 0-521-78962-1.
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