noun
specific epithet; specific name
In biological nomenclature, the second part of a binomial species name, e.g., 'sapiens' in Homo sapiens.
学名の種小名は、属名の後に続く。
The specific epithet in a scientific name follows the genus name.
この植物の種小名は「japonica」です。
The specific epithet of this plant is 'japonica'.
学名 is the full scientific name (genus + specific epithet), while 種小名 refers only to the second part.
Compound of 種 (species) + 小 (small) + 名 (name), literally 'small species name', referring to the second, more specific part of a binomial name.