The species is one of the basic units of biological classification. Both species concepts and recognition are essential topics in taxonomic studies and other biological research. In the first part of this review, we briefly discuss the taxonomic history of the class Dothideomycetes. In the second part of the paper, we review four commonly used species concepts, focusing on morphological, ecological, biological and phylogenetic criteria and their applicability in the taxonomy of Dothideomycetes. The application and utility of the four criteria is discussed with examples in the genera Ascochyta, Cercospora and Neofusicoccum. Some problems and challenges of studying Dothideomycetes are analyzed and basic guidelines for classifying species under the above criteria are provided.

物种是生物分类的基本单位之一。物种概念和识别都是分类学研究和其他生物学研究的重要主题。在本综述的第一部分中，我们简要讨论了 Dothideomycetes 的分类历史。在本文的第二部分，我们回顾了四种常用的物种概念，重点关注形态学、生态学、生物学和系统发育标准及其在 Dothideomycetes 分类学中的适用性。以泡囊菌属、尾孢菌属和新褐藻属为例讨论了这四个标准的应用和实用性。分析了Dothideomycetes研究中的一些问题和挑战，并提供了根据上述标准进行物种分类的基本准则。