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Figure 8; Nanhaipotamon wupingense Cheng, Yang, Zhong & Li, 2003, male neotype (22.4 × 18.3 mm), JX 050563 (A–D); female (25.3 × 20.8 mm), JX 050570 (E–F). Dorsal habitus (A); cephalothorax, anterior view (B); anterior thoracic sternum and pleon, ventral view (C); sterno-pleonal cavity with right G1 in situ (left G1 removed), ventral view (D); pleon, ventral view (E); vulvae, ventral view (F).
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Figure 5; Nanhaipotamon macau sp. n., male holotype (37.4 × 30.9 mm), SYSBM 001649 (A–C, F, G); male paratype (36.6 × 29.3 mm), SYSBM 001651 (D); male (35.3 × 28.8 mm), SYSBM 001652 (E); female paratype (31.3 × 25.5 mm), SYSBM 001650 (H–I). Left maxilliped 3 (A); left G2, ventral view (B); left G1, ventral view (C–E); minor cheliped (F, H); major cheliped (G, I). Scale bars: 1.0 mm (A–E); 5.0 mm (F–I).
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Figure 6; Nanhaipotamon macau sp. n., male holotype (37.4 × 30.9 mm), SYSBM 001649 (A–C); Nanhaipotamon wupingense Cheng, Yang, Zhong & Li, 2003, male neotype (22.4 × 18.3 mm), JX 050563 (D–F); Nanhaipotamon guangdongense Dai, 1997, male, (30.9 × 24.8 mm), SYSBM 001646 (G). Left G1, ventral view (A, D, E); left G1, dorsal view (B); Left G1 terminal segment, ventral view (C); Left G2, ventral view (F, G). Scale bar: 1.0 mm.
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Figure 3; Nanhaipotamon macau sp. n., male holotype (37.4 × 30.9 mm), SYSBM 001649 Dorsal habitus (A); cephalothorax, anterior view (B); anterior thoracic sternum and pleon, ventral view (C); sterno-pleonal cavity with right G1 in situ (left G1 removed), ventral view (D).
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Figure 2; The freshwater crabs of Macau, colour in life. Nanhaipotamon macau sp. n., male (29.0 × 24.2 mm), SYSBM 001654 (A); Nanhaipotamon guangdongense Dai, 1997, male (35.9 × 28.8 mm), SYSBM 001645 (B); Cantopotamon hengqinense Huang, Ahyong & Shih, 2017, male, specimen not collected (C); Somanniathelphusa zanklon Ng & Dudgeon, 1992, photographed in Zhuhai, specimen not collected (D).
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Figure 4; Nanhaipotamon macau sp. n., male holotype (37.4 × 30.9 mm), SYSBM 001649 (A); female paratype (31.3 × 25.5 mm), SYSBM 001650 (B–D). Anterior thoracic sternum (A); dorsal habitus (B); pleon, ventral view (C); vulvae, ventral view (D).