Gelasimus vocans ( Linnaeus, 1758 )

Shih, Hsi-Te, Wong, Kingsley J. H., Chan, Benny K. K., Nguyen, Thanh Son, Do, Van Tu, Ngo, Xuan Quang & Hsu, Pei-Yi, 2022, Branchipolynoe onnuriensis Kim & Choi & Eyun & Kim & Yu 2022, sp. nov., Zoological Studies 61 (66), pp. 1-24 : 10-12

Gelasimus vocans ( Linnaeus, 1758) ( Fig. 4C, D )

Cancer vocans Linnaeus, 1758: 626 (type locality: East Indies, probably Amboina ( Crane 1975)).

Gelasimus cultrimanus – Kingsley 1880: 140, pl. 9(7) [?part].

Gelasimus marionis – Kingsley 1880: 141, pl. 9(8) [part].

Uca (Thalassuca) vocans vocans – Crane 1975: 85, 92, 598, figs. 38I, L, 56B, 60C–E, 64F, FF, pl. 14E–H; Dai et al. 1986: 423, pl. 58(7), fig. 234(1, 2).

Uca (Thalassuca) vocans – Dai and Yang 1991: 463, pl. 58(7), fig. 234.

Uca vocans – Yamaguchi 1994: 180 [part]; S-L Yang et al. 2008: 807; Shih et al. 2010b: 16; Chertoprud et al. 2012: 271, pl. 46E–G.

Uca (Gelasimus) vocans – Ng et al. 2008: 240; Kostina et al. 2016: 206, 257; Shih et al. 2016a: 66, fig. 3G, H.

? Uca borealis – Do 2003: 8.

Uca vocans – Do 2003: 8.

Uca borealis – Chertoprud et al. 2012: 270, pl. 46A, B.

Uca rosea – Chertoprud et al. 2012: 269, pl. 45G, H.

Gelasimus vocans – Shih et al. 2015: 221, figs. 182–188; Shih et al. 2016b: 151, 169, fig. 7G; Ng et al. 2017: 125; Sasaki 2019: 12453; Wada 2019: e142.

Gelasimus (Gelasimus) vocans – Rosenberg 2019: 734.

? Uca (Gelasimus) borealis – Le et al. 2020: 15.

Material examined: Nha Trang: 1 ò (12.1 mm)

(NCHUZOOL 15126), 17 òò (6.8–19.8 mm), 9 ññ (8.9–16.6 mm) (NCHUZOOL 15136), mangrove I, coll. I-H. Chan and K. J. H. Wong, 24 Nov. 2010; 12 òò (12.2–23.8 mm), 1 ñ (13.3 mm) (NCHUZOOL 15127), 1 ò (16.1 mm) (NCHUZOOL 14913), 3 òò (20.0– 22.2 mm) (NCHUZOOL 15135), mangrove II, coll. I.-H. Chan and K. J. H. Wong, 24 Nov. 2010; 30 òò (10.9–27.2 mm) (NCHUZOOL 15128), 14 ññ (12.5–22.2 mm), 1 ovig. ñ (21.0 mm) (NCHUZOOL 15129), Luong Son, Vinh Luong, coll. I-H. Chen et al., 23 Nov. 2010. Binh Thuan: 13 òò (10.6–21.2 mm), 6 ññ (9.3–20.5 mm) (NCHUZOOL 15125), Nguyen Thong, Phu Hai, Phan Thiet, coll. I-H. Chen et al., 26 Nov. 2010. Kien Giang: 2 ññ (14.9, 17.0 mm) (NCHUZOOL 15130), Phu Quoc Island, coll. B. K. K. Chan, 2 Dec. 2012; 12 òò (9.9–18.6 mm), 3 ññ (10.5–14.6 mm), 4 ovig. ññ (12.6–16.9 mm) (NCHUZOOL 15131), 2 òò (6.9, 17.5 mm), 3 ññ (16.6–18.2 mm) (NCHUZOOL 15137), Phu Quoc Island, coll. H.- T. Shih, 2 Dec. 2012.

Distribution: Myanmar, Thailand, Malay Peninsula, Indonesia, Borneo, Philippines, South China (Hainan), Taiwan and the Ryukyus.

Remarks: Gelasimus vocans shows a broad distribution from the eastern Indian Ocean to West Pacific, including southern Hainan, China, Taiwan (including Penghu) and the Ryukyus (and probably in main islands of Japan) in East Asia ( Crane 1975; Shih et al. 2010b 2015 2016a). In Vietnam, G. vocans only occurs in the south, clearly separated from G. borealis in the northern regions (see DISCUSSION below). However, various members of the G. vocans species complex are reported to be sympatric in Taiwan: G. borealis and G. jocelynae in northeastern and southwestern Taiwan (Yilan and Tainan); G. vocans and G. jocelynae in southern and eastern Taiwan (Hengchun Peninsula, Pingtung and Taitung); and the three species in southern Taiwan (Dapengwan, Pingtung) and Penghu ( Shih et al. 2015 2016a).

Figures

Fig. 4. Dorsal view of carapace and frontal view of major cheliped. G. tetragonon (A, B, NCHUZOOL 15124, CW 23.4 mm, Vinh Luong, Nha Trang, Khanh Hoa); Gelasimus vocans (C, D, specimens not catalogued, Phu Quoc Island, Kien Giang); Paraleptuca splendida (E, F, NCHUZOOL 13448, CW 19.5 mm, Vinh Luong, Nha Trang); Tubuca acuta (G, H, NCHUZOOL 15138, CW 15.9 mm, Dong Rui, Quang Ninh).