Taxonomic study on the genus Mongoloniscus Verhoeff, 1930 (Isopoda, Agnaridae) from China: morphological and phylogenetic analyses Author Jiang, Chao 0000-0003-1841-1169 State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China Author Zhong, Jing State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China Author Wang, Zhidong State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China Author Li, Weichun 0000-0003-0154-861X College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China Author Huang, Luqi State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China text ZooKeys 2024 2024-05-23 1202 229 253 journal article 10.3897/zookeys.1202.113560 B493B7C6-9977-4A6C-B9D4-D4A865468DC8 Genus Mongoloniscus Verhoeff, 1930 Type species. Mongoloniscus koreanus Verhoeff, 1930 , by subsequent designation. Notes. Previous studies have ascribed eighteen species to the genus Mongoloniscus ; however, some do not conform to the criteria proposed by Kwon (1993) . In the present study, we provide the typical habitus of the genus (Fig. 3 ) and adopt a more restrictive interpretation, asserting that a species can be classified as Mongoloniscus if exhibiting all the following characters: Figure 3. Habitus of Mongoloniscus sinensis ( Dollfus, 1901 ) , male A dorsal view, the blue circles show the noduli laterales arrangement B cephalon and pereonites 1 and 2 in dorsal view C pleopod 1 exopod D pleopod 1 endopod. Dorsum granulated, with numerous gland pores along the entire margin of the pereonites. Noduli laterales more or less at the same distance from lateral margin, with a d / c value less than 0.75. Cephalon with well-developed median lobe and lateral lobes, median one convex or arched on anterior margin. Pereonite 1 posterior margin straight or rounded. Pleopodal exopods 1–5 with monospiracular internal lungs. Pleopod 1 exopod with bilobed apex, and posterior tip of endopod bent outwards.