Lucasioides vannamei (Arcangeli, 1927) Jiang & Zhong & Wang & Li & Huang, 2024

Jiang, Chao, Zhong, Jing, Wang, Zhidong, Li, Weichun & Huang, Luqi, 2024, Taxonomic study on the genus Mongoloniscus Verhoeff, 1930 (Isopoda, Agnaridae) from China: morphological and phylogenetic analyses, ZooKeys 1202, pp. 229-253 : 229-253

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.

Figures

Figure 2. Maximum likelihood phylogenetic tree based on combined COI and 28 S data for Mongoloniscus. Values above the branches represent the posterior probability (PP) and bootstrap support (BS), BS < 70 % or PP < 0.9 are indicated as hyphens.