Inzoological nomenclature, thespecific name (alsospecific epithet, species epithet, orepitheton) is the second part (the second name) within the scientific name of aspecies (abinomen). The first part of the name of a species is the name of thegenus or the generic name. The rules and regulations governing the giving of a new species name are explained in the articlespecies description. For example, the scientific name for humans isHomo sapiens, which is the species name, consisting of two names:Homo is the "generic name" (the name of the genus) andsapiens is the "specific name".

Historically,specific name referred to the combination of what are now called the generic and specific names.Carl Linnaeus, who formalizedbinomial nomenclature, 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:^[1]

• 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 in the International Code of Zoölogical Nomenclature.^[1]

Grammatically, abinomen (and atrinomen, also) must be treated as if it were aLatin 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 inapposition 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.
• A noun in thegenitive case (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 theChalumna River in the Indian Ocean, where the coelacanth was first found, i.e. itstype locality.
• An adjective which must agree in case and gender with the genus:Felis silvestris ("the forest cat")

Inbotanical nomenclature, "name"always refers to thewhole name (of a species or otherwise), whereas in zoological nomenclature it can refer to either part of the binomen. ThusHedera helix (common ivy, English ivy) is the name of the species;Hedera is the name of the genus; buthelix is called the specific epithet,not the specific name.^[2]

• Banks, Nathan (2009).The Entomological Code. a Code of Nomenclature for Use in Entomology. BiblioBazaar.ISBN 978-1-113-26677-4.
• 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.

• Zoological nomenclature
• Epithets

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