신종을 기재할 때 명명자가 해당 종의 기준으로 지정한 유일한 표본
A single physical specimen designated as the definitive representative of a species at the time of its original description.
예문:
"The holotype of the newly discovered orchid is preserved in the national herbarium."
"If a holotype is lost, a neotype may be designated to serve as the reference specimen."