新系统学这一名词的提出,不过是近二三十年的事。新系统学顯明是对舊系统学而言,即所谓古典系统学或正统系统学,亦即杜律尔(W.B.Turrill)所稱謂α-系统学,即一般通行的分类学。古典系统学是根據顯明可靠的形態的性状分别生物为種(species)。在一个种中若有顯明可靠的、但是较小的形態区别,则可再分为亚种或变种;在亚种或变种之内,或僅在种内,若有顯明可靠但是更不重要或只有一个形态区别,则可再分为變型。但是用为作区别的是外部的形态性状。这种分类的方法是正统 The new systematic theory of this term is proposed, but it is nearly twenty or thirty years. Neo-Systematics is clearly a system of old systems, the so-called classical systems or orthodox systems, which is what W.B.Turrill calls α-systematics, which is commonly known as taxonomy. Classical systematics is based on the obvious and reliable morphological traits of biological species (species). If there is a clear and reliable species in one species, but the smaller morphological differences can be subdivided into subspecies or varieties; within the subspecies or varieties, or within species only, if it is obviously reliable or less important or There is only one morphological difference, which can be subdivided into variants. But for the difference is the external morphological traits. The method of this classification is orthodox