Lucasioides vannamei (Arcangeli, 1927) comb. nov.

Porcellio (Nagara) Van Namei Arcangeli, 1927: 243 .

Porcellio (Nagara) sundaicus: Arcangeli 1927: 248, fig 15.

Nagara (Nagara) Van Namei: Arcangeli 1952: 302.

Protracheoniscus (Mongoloniscus) nipponicus Arcangeli, 1952: 299 .

Mongoloniscus nipponicus: Kwon 1993: 150, figs 14, 15.

Mongoloniscus vannamei: Kwon 1995: 527.

Examined material.

China: 1 spm (20230214007), Anhui province, Fuyang, Yingquan District, Wuming Service Area (33.0458 ° N, 115.8935 ° E), 14. ii. 2023, coll. Chao Jiang ; 50 spms (20230215013 – 20230215023), Bozhou, Bozhou Cultural Park (33.8286 ° N, 115.7616 ° E), 15. ii. 2023, coll. Chao Jiang ; 10 spms (20230218001 – 20230218008), Jiangxi Province, Dexing, Raoshoukun Park (28.9558 ° N, 117.5608 ° E), 18. ii. 2023, coll. Chao Jiang ; 11 spms (20230219001 – 20230219008), Dexing Railway Station (28.9587 ° N, 117.8544 ° E), 19. ii. 2023, coll. Chao Jiang ; 15 spms (20230214001 – 20230214008), Jiujiang, Saiyang Town, near Lushan cable-way Station (29.2926 ° N, 115.9512 ° E), 16. ii. 2023, coll. Chao Jiang ; 32 spms (20230216019 – 20230216033), Chaisang district, Zhonghuaxianmu Park (29.6144 ° N, 115.9002 ° E), 16. ii. 2023, coll. Chao Jiang ; 9 spms (202302180039, - 40), Leping, Hongyan Town, Hongyanxianjing Scenic Area (29.0442 ° N, 117.4738 ° E), 18. ii. 2023, coll. Chao Jiang ; 19 spms (20230218048 – 20230218054, - 56, - 57), Gaojia Town (28.9949 ° N, 117.4425 ° E), 18. ii. 2023, coll. Chao Jiang ; 12 spms (20210409088 – 20210409090), Hubei Province, Jingshan County, Kongshandong Scenic Area (30.9728 ° N, 113.0415 ° E), 100 m asl., coll. Zhidong Wang & Tianyun Chen ; 3 spms (20210410034), Huzhuashan National Forestry Park (31.0765 ° N, 112.9009 ° E), 200 m asl., coll. Zhidong Wang & Tianyun Chen . 2 spms (20210508051, - 52), Zhejiang Province, Pan’an County, Dapanshan Medicinal Plant Garden (28.9827 ° N, 120.5536 ° E), 680 m asl., coll. Chao Jiang .

Remarks.

Mongoloniscus vannamei distinctly differs from all other Mongoloniscus species by the noduli laterales on pereonites 2–4 and 7 which are much farther from the lateral margins than those on pereonites 1, 5, and 6. We recognized this species based on the diagnostic characters among the similar genera Mongoloniscus, Lucasioides, Agnara, Koreoniscus and Protracheoniscus (Kwon 1993), and found that all the traits of M. vannamei match the generic characters of Lucasioides, except for its epimeron of pereonite 1 was not bent outwards. Furthermore, M. vannamei, L. gigliotosi and L. isseli formed a clade with high support (PP = 1.00, BS = 95 %) according to the results of the phylogenetic analysis (Fig. 2). Thus, M. vannamei must be transferred to Lucasioides . For species descriptions and illustrations, see Kwon (1993).

Distribution.

China (Anhui, Hubei, Hunan, Jiangxi, Zhejiang), Japan, Korea.