Mongoloniscus koreanus ( Verhoeff, 1930 )

Mongoloniscus koreanus ( Verhoeff, 1930) View in CoL

Protracheoniscus ( Mongoloniscus) koreanus Verhoeff, 1930: 117, figs 14, 15. View in CoL

Mongoloniscus koreanus View in CoL : Kwon 1993: 149, figs 12, 13; Kwon 1995: 528.

Mongoloniscus nigrogranulatus Kwon & Taiti, 1993: 48, figs 201–208. View in CoL

Nagurus tsushimaensis Nunomura, 1987: 30 , fig. 113.

Nagurus pallidus View in CoL : 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 9 spms ( 20230324017 – 20230324021 ), Xiuning County, Qiyunshan Service Area ( 29.7540 ° N, 118.1321 ° E), 200 m asl., 24. iii. 2023, coll. Chao Jiang GoogleMaps ; 1 spm ( 20230325071 ), Huangshan, Tankou Town , Hougu ( 30.0740 ° N, 118.1527 ° E), 510 m asl., 25. iii. 2023, coll. Chao Jiang GoogleMaps ; 12 spms ( 20230215006 – 20230215008 ), Bozhou: Bozhou Cultural Park ( 33.8286 ° N, 115.7616 ° E), 15. ii. 2023, coll. Chao Jiang GoogleMaps ; 2 spms ( 20230214004 , 20230214005 ), Fuyang, Yingquan district, Wuming Service Area , ( 33.0458 ° N, 115.8935 ° E), 14. ii. 2023, coll. Chao Jiang GoogleMaps . 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 GoogleMaps . 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 GoogleMaps . 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps . 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 9 spms ( 20210415061 – 20210415069 ), Yuanyuan Park ( 32.6113 ° N, 110.7695 ° E), 270 m asl., 15. iv. 2021, coll. Zhidong Wang & Tianyun Chen GoogleMaps ; 2 spms ( 20190321002 , 20190321007 ), Hunan Province, Yongzhou, Puliqiao Town ( 26.6849 ° N, 111.5997 ° E), 160 m asl., 21. iii. 2019, coll. Chao Jiang GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 23 spms ( 20230219018 – 20230219020 ), Dexing Railway Station ( 28.9587 ° N, 117.8544 ° E), 19. ii. 2023, coll. Chao Jiang GoogleMaps ; 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 GoogleMaps ; 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 GoogleMaps ; 29 spms ( 20220911007 ), Tongjiang County: Nuoshuihe Town ( 32.4320 ° N, 107.1858 ° E), 780 m asl., 11. ix. 2022, coll. Chao Jiang GoogleMaps ; 28 spms ( 20220914002 – 20220914022 ), Bazhong, Bazhou District , Jiangbei Road , ( 31.8718 ° N, 106.7379 ° E), 380 m asl., 14. ix. 2022, coll. Chao Jiang GoogleMaps ; 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 GoogleMaps ; 17 spms ( 20220829045 , - 47 – - 60), Jiajiang County, Jiajiang Bridge ( 29.7216 ° N, 103.5754 ° E), 380 m asl., 29. viii. 2022, coll. Chao Jiang GoogleMaps ; 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 GoogleMaps ; 2 spms ( 20210531016 , - 17), Mianning Street ( 23.8787 ° N, 100.0983 ° E), 1430 m asl., 31. v. 2021, coll. Chao Jiang GoogleMaps ; 6 spms ( 20210506004 – 20210506009 ), Zhejiang Province, Jinhua, Anwen Street , ( 29.0169 ° N, 120.4570 ° E), 390 m asl., 6. v. 2021, coll. Chao Jiang GoogleMaps ; 27 spms ( 20230324076 – 20230324086 ), Hangzhou, Lin’an Service Area , ( 30.2076 ° N, 119.5308 ° E), 160 m asl., 24. iii. 2023, coll. Chao Jiang GoogleMaps ; 2 spms ( 20230327058 ), Tianmushan National Nature Reserve ( 30.3190 ° N, 119.4448 ° E), 350 m asl., 27. iii. 2023, coll. Chao Jiang GoogleMaps ; 11 spms ( 20230328039 – 20230328044 ), Huzhou, Huzhou Railway Station ( 30.8628 ° N, 120.0238 ° E), 160 m asl., 28. iii. 2023, coll. Chao Jiang GoogleMaps ; 8 spms ( 20230324004 – 20230324009 ), Wuxing District, Zhihe Road ( 120.0211 E, 30.8706 N), 20 m asl., 24. iii. 2023, coll. Chao Jiang GoogleMaps ; 12 spms ( 20230328057 – 20230328059 ), Wuxing District, Renhuangshan Mountain , ( 30.8973 ° N, 120.0572 ° E), 80 m asl., 28. iii. 2023, coll. Chao Jiang GoogleMaps ; 4 spms ( 20230328008 – 20230328011 ), Anji County, Fenghuanshan Park ( 30.6198 ° N, 119.7013 ° E), 160 m asl., 28. iii. 2023, coll. Chao Jiang GoogleMaps .

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.