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 Mongoloniscus koreanus ( Verhoeff, 1930 ) Protracheoniscus ( Mongoloniscus ) koreanus Verhoeff, 1930: 117 , figs 14, 15. Mongoloniscus koreanus : Kwon 1993: 149 , figs 12, 13; Kwon 1995: 528. Mongoloniscus nigrogranulatus Kwon & Taiti, 1993: 48 , figs 201–208. Nagurus tsushimaensis Nunomura, 1987: 30 , fig. 113. Nagurus pallidus : Nunomura 1991: 8, fig. 171. Examined material. China : 2 spms ( 20200813002 , 20200813006 ), Anhui Province , Hefei , Binghu National Forestry Park ( 31.7230 ° N , 117.3728 ° E ), 20 m asl., 13. viii. 2020 , coll. Chao Jiang ; 2 spms ( 20230324029 – 20230324030 ), Qimen county : Qishan Town , Qichang Road ( 29.8666 ° N , 117.6841 ° E ), 150 m asl., 24. iii. 2023 , coll. Chao Jiang ; 28 spms ( 20230327116 – 20230327129 ), Ningguo County , Yunti She Village , Qianqiushezu ( 29.8666 ° N , 117.6841 ° E ), 150 m asl., 27. iii. 2023 , coll. Chao Jiang ; 26 spms ( 20230326076 – 20230326088 , 20230327102 – 20230327103 ), Xijin Streets , Cuizhu Park ( 30.6319 ° N , 118.9710 ° E ), 60 m asl., 27–28. iii. 2023 , coll. Chao Jiang ; 9 spms ( 20230324017 – 20230324021 ), Xiuning County , Qiyunshan Service Area ( 29.7540 ° N , 118.1321 ° E ), 200 m asl., 24. iii. 2023 , coll. Chao Jiang ; 1 spm ( 20230325071 ), Huangshan , Tankou Town , Hougu ( 30.0740 ° N , 118.1527 ° E ), 510 m asl., 25. iii. 2023 , coll. Chao Jiang ; 12 spms ( 20230215006 – 20230215008 ), Bozhou : Bozhou Cultural Park ( 33.8286 ° N , 115.7616 ° E ), 15. ii. 2023 , coll. Chao Jiang ; 2 spms ( 20230214004 , 20230214005 ), Fuyang , Yingquan district , Wuming Service Area , ( 33.0458 ° N , 115.8935 ° E ), 14. ii. 2023 , coll. Chao Jiang . 2 spms ( 20201018028 , 20201018037 ), Chongqing , Jiangbei District , Tieshanping Forestry Park ( 29.5957 ° N , 106.6645 ° E ), 450 m asl., 18. x. 2020 , coll. Chao Jiang & Zhidong Wang . 13 spms ( 20201118001 , - 12, - 18, - 20, - 22, - 25, - 30, - 37, - 38, - 40, - 41, - 43), Guangxi Zhuang Autonomous Region , Guilin , Guangxi Guilin National Forestry Park ( 25.2207 ° N , 110.2543 ° E ), 18. xi. 2020 , coll. Zhidong Wang . Guizhou Province , 20 spms , ( 20201020001 , - 4, - 7, - 9, - 10, - 14, - 16, - 17, - 20, - 21, - 24, - 25, - 27, - 29, - 30, - 31, - 35, - 36, - 39, - 40), Zhengning County , Yelangdong Scenic Area ( 26.0918 ° N , 105.6248 ° E ), 1070 m asl., 20. x. 2020 , coll. Chao Jiang & Zhidong Wang ; 8 spms ( 20210601038 – 20210601045 ), Guiyang : Jinhua town , Shangcheng West Road ( 26.6067 ° N , 106.57463 ° E ), 1260 m asl., 1. vi. 2021 , coll. Chao Jiang ; 16 spms ( 20210728020 – 20210728035 ), Jiangkou county , Fanjingshan National Nature Reserve ( 27.8464 ° N , 108.7733 ° E ), 1510 m asl., 28. vii. 2021 , coll. Zhidong Wang . 3 spms ( 20210410069 – 20210410071 ), Hubei Province , Jingmen , Xiangshan II Road , Youyuan ( 31.0441 ° N , 112.1999 ° E ), 80 m asl., 10. iv. 2021 , coll. Zhidong Wang & Tianyun Chen ; 5 spms ( 20210414063 , - 64, 20210414066 – 20210414068 ), Shennongjia : shennongding ( 31.4902 ° N , 110.3583 ° E ), 1840 m asl., 14. iv. 2021 , coll. Zhidong Wang & Tianyun Chen ; 9 spms ( 20210415051 – 20210415059 ), Shiyan , Niutoushan National Forestry Park ( 32.6118 ° N , 110.7298 ° E ), 390 m asl., 15. iv. 2021 , coll. Zhidong Wang & Tianyun Chen ; 9 spms ( 20210415061 – 20210415069 ), Yuanyuan Park ( 32.6113 ° N , 110.7695 ° E ), 270 m asl., 15. iv. 2021 , coll. Zhidong Wang & Tianyun Chen ; 2 spms ( 20190321002 , 20190321007 ), Hunan Province , Yongzhou , Puliqiao Town ( 26.6849 ° N , 111.5997 ° E ), 160 m asl., 21. iii. 2019 , coll. Chao Jiang ; 37 spms ( 20201107001 , - 2, - 6, - 7, - 10, - 14, - 16, - 18, - 22, - 24 – - 30, - 32, - 33, - 35 – - 38, - 40, - 42, - 44, - 45, - 47, - 48, - 50, - 52 – - 54, - 57, - 60, - 63, - 64, - 67), Jiangsu Province , Yancheng : Jiangsu Yancheng Wetland National Nature Reserve ( Rare Birds ) ( 33.6035 ° N , 120.5042 ° E ), 5 m asl., 7. xi. 2020 , coll. Zhidong Wang ; 9 spms ( 20201109001 , - 6, - 9, - 18, - 27, - 30, - 31, - 39, - 42), Nanjing , Jiangjunshan Scenic Area ( 32.1007 ° N , 118.5861 ° E ), 130 m asl., 9. xi. 2020 , coll. Zhidong Wang ; 2 spms ( 20210801001 , - 2), Jiangxi Province , Nanchang , Zhaoxian Town , Meiling , ( 28.7243 ° N , 115.6848 ° E ), 350 m asl., 1. viii. 2021 , coll. Zhidong Wang ; 32 spms ( 20230217013 –18, - 26, - 27), Dexing , Yincheng Street , Jishuihu Wetland Park ( 28.9354 ° N , 117.5952 ° E ), 70 m asl., 17. ii. 2022 , coll. Chao Jiang ; 23 spms ( 20230219018 – 20230219020 ), Dexing Railway Station ( 28.9587 ° N , 117.8544 ° E ), 19. ii. 2023 , coll. Chao Jiang ; 1 spm ( 20210330053 ), Shaanxi Province , Xi’an, Xi’anbei Railway Station , ( 34.3741 ° N , 108.9345 ° E ), 350 m asl., 3. iii. 2021 , coll. Zhidong Wang ; 26 spms ( 20220909001 – 20220909026 ), Sichuan Province , Yanting County , Yanting Service Area ( 31.1481 ° N , 105.3804 ° E ), 360 m asl., 9. ix. 2022 , coll. Chao Jiang ; 29 spms ( 20220911007 ), Tongjiang County : Nuoshuihe Town ( 32.4320 ° N , 107.1858 ° E ), 780 m asl., 11. ix. 2022 , coll. Chao Jiang ; 28 spms ( 20220914002 – 20220914022 ), Bazhong , Bazhou District , Jiangbei Road , ( 31.8718 ° N , 106.7379 ° E ), 380 m asl., 14. ix. 2022 , coll. Chao Jiang ; 16 spms ( 20220829070 , - 71, - 73 – - 84), Meishan , Taihe Town , Meishan Service Area , ( 31.8718 ° N , 106.7379 ° E ), 380 m asl., 29. viii. 2022 , coll. Chao Jiang ; 17 spms ( 20220829045 , - 47 – - 60), Jiajiang County , Jiajiang Bridge ( 29.7216 ° N , 103.5754 ° E ), 380 m asl., 29. viii. 2022 , coll. Chao Jiang ; 4 spms ( 20210528013 – 20210528015 , - 18), Yunnan Province , Linchang , Manpan Street , ( 23.9061 ° N , 100.0985 ° E ), 1430 m asl., 28. v. 2021 , coll. Chao Jiang ; 2 spms ( 20210531016 , - 17), Mianning Street ( 23.8787 ° N , 100.0983 ° E ), 1430 m asl., 31. v. 2021 , coll. Chao Jiang ; 6 spms ( 20210506004 – 20210506009 ), Zhejiang Province , Jinhua , Anwen Street , ( 29.0169 ° N , 120.4570 ° E ), 390 m asl., 6. v. 2021 , coll. Chao Jiang ; 27 spms ( 20230324076 – 20230324086 ), Hangzhou , Lin’an Service Area , ( 30.2076 ° N , 119.5308 ° E ), 160 m asl., 24. iii. 2023 , coll. Chao Jiang ; 2 spms ( 20230327058 ), Tianmushan National Nature Reserve ( 30.3190 ° N , 119.4448 ° E ), 350 m asl., 27. iii. 2023 , coll. Chao Jiang ; 11 spms ( 20230328039 – 20230328044 ), Huzhou , Huzhou Railway Station ( 30.8628 ° N , 120.0238 ° E ), 160 m asl., 28. iii. 2023 , coll. Chao Jiang ; 8 spms ( 20230324004 – 20230324009 ), Wuxing District , Zhihe Road ( 120.0211 E , 30.8706 N ), 20 m asl., 24. iii. 2023 , coll. Chao Jiang ; 12 spms ( 20230328057 – 20230328059 ), Wuxing District , Renhuangshan Mountain , ( 30.8973 ° N , 120.0572 ° E ), 80 m asl., 28. iii. 2023 , coll. Chao Jiang ; 4 spms ( 20230328008 – 20230328011 ), Anji County , Fenghuanshan Park ( 30.6198 ° N , 119.7013 ° E ), 160 m asl., 28. iii. 2023 , coll. Chao Jiang . Remarks. This species closely resembles M. maculatus (Iwamoto, 1943) by the noduli laterals at almost the same distance from the lateral margins, and the morphology of pleopod 1 exopod. However, it can be distinguished in having the eyes with 20–24 ommatidia, male pereopod 6 fringed with long setae and bearing a distal protrusion on the sternal margin at the basis, and the ischium of pereopod 7 fringed with setae as well. In M. maculatus , its eyes have 15 or 16 ommatidia, the basis of pereopod 6 and the ischium of male pereopod 7 with sparse setae. For detailed descriptions and illustrations of M. koreanus see Kwon (1993) . Distribution. China ( Anhui , Chongqing , Guangxi , Guizhou , Hubei , Hunan , Jiangsu , Jiangxi , Shaanxi , Sichuan , Yunnan , Zhejiang ), Japan , and Korea .