Austruca annulipes (H. Milne Edwards, 1837 )

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 : 4-6

Austruca annulipes (H. Milne Edwards, 1837) ( Fig. 3A, B )

Cancer vocans minor Herbst, 1782: 81 , pl. 1(10) [nomen oblitum]; Shih et al. 2021: 208, fig. 1A.

Gelasimus annulipes H. Milne Edwards, 1837: 55 , pl. 18(10–13) (type locality: mer des Indes (= Indian Ocean)) [nomen protectum]; Kingsley 1880: 148, pl. 10(22) [part].

Gelasimus lacteus – Kingsley 1880: 149 [part].

Uca (Celuca) lactea annulipes – Crane 1975: 298, 611, figs. 18A–C, 19I–N, 20D–F, 24N, O, 27I–J, 29D, 32L, M, 41A, 54I, II, 69D, pls. 39A–D, 40C, D [part]; Dai et al. 1986: 426, pl. 59(3), fig. 236(2).

Uca (Celuca) annulipes – Dai and Yang 1991: 467, pl. 59(3), fig. 236(2).

? Uca lactea – Do 1996: 36.

Uca (Paraleptuca) annulipes – Ng et al. 2008: 241.

Uca lactea annulipes – Trivedi et al. 2018: 17, 20, fig. 3c.

Uca annulipes – Dawydoff 1952: 141; Yamaguchi 1994: 153, 183; S-L Yang et al. 2008: 807; Shih et al. 2009: 376; Shih et al. 2010b: 6; Chertoprud et al. 2012: 266, pl. 44C, D; Hoang et al. 2012: 75; Shih et al. 2013: 643; Saher et al. 2014: 67; Le et al. 2018: 41, fig. 5D; Le et al. 2020: 15.

Uca (Austruca) annulipes – Naderloo et al. 2010: 7, figs. 2a–h, 3a–e, 4b, 12a–c; Kostina et al. 2016: 196, 257.

Austruca annulipes – Shih et al. 2016b: 153, 168, fig. 8A; Sasaki 2019: 12424; Shih et al. 2021: 212, fig. 2.

Austruca (Austruca) annulipes – Rosenberg 2019: 734.

Material examined: Nha Trang: 4 òò (15.3–17.4 mm), 1 ñ (13.3 mm) (NCHUZOOL 15111), mangrove I, coll. K. J. H. Wong and I-H. Chen, 24 Nov. 2010; 7 òò (13.2–21.7 mm), 3 ññ (14.7–18.6 mm) (NCHUZOOL 15112), mangrove II, coll. I-H. Chen and K. J. H. Wong, 24 Nov. 2010. Binh Thuan: 20 òò (11.6–19.6 mm), 1 ñ (14.0 mm) (NCHUZOOL 15110), Nguyen Thong, Phu Hai, Phan Thiet, coll. I-H. Chen et al., 26 Nov. 2010. Kien Giang: 2 òò (12.8, 13.4 mm) (NCHUZOOL 15113), Phu Quoc Island, coll. H.- T. Shih, 2 Dec. 2012.

Distribution: Pakistan, India, Myanmar, Thailand, Malay Peninsula, Singapore, Indonesia, Borneo, Vietnam, and South China (Hainan).

Remarks: Austruca annulipes , widely distributed in IWP, is a common species in Southeast Asia ( Crane 1975; Shih et al. 2009 2022; Naderloo et al. 2010; Trivedi et al. 2018). In the region of the SCS, it has been reported from southern coast of Hainan Island (ca. 18°N; Figs. 1 , 7 ), and northern part of the SCS ( Dai et al. 1986; Dai and Yang 1991; Shih et al. 2010b), which is the northernmost distribution of this species in the West Pacific. However, the current records show it is only limited to the southern parts of Vietnam (ca. 12°N; Figs. 1 , 7 ).

Figures

Fig. 3. Dorsal view of carapace and frontal view of major cheliped. Austruca annulipes (A, B, specimens not catalogued, Phu Quoc Island, Kien Giang); A. lactea (C, D, NCHUZOOL 15115, CW 13.1 mm, Nam Dinh); A. perplexa (E, F, NCHUZOOL 15117, CW 10.3 mm, Can Gio, Ho Chi Minh City); Gelasimus borealis (G, H, NCHUZOOL 15121, CW 21.1 mm, Dong Rui, Quang Ninh).

Fig. 1. Collection sites for specimens of fiddler crabs from Vietnam examined in this study (see Table 1).

Fig. 7. Oceanographic currents (summer) around Vietnamese waters and the distribution of fiddler crabs. Oceanographic current map is adopted from figure 5D in Xue et al. (2004) (Lincence number: 5380661146310, offered by JOHN WILEY AND SONS LICENSE). Marine ecoregions are indicated by bold dashed lines. Abbreviations: Ocean currents: GTONC – Gulf of Tonkin Current, SCSWC – South China Sea Warm Current, SCSKB – South China Sea Branch of Kuroshio, SEVOC – Southeast Vietnam Offshore Current; marine ecoregions (with numbers as listed in Spalding et al. 2007): GTo – Gulf of Tonkin (112), SC – Southern China (113), SCSOI - South China Sea Oceanic Islands (114), GTh – Gulf of Thailand (115), SV – Southern Vietnam (116), SS – Sunda Shelf (117), SK – South Kuroshio (121). Colorations depicted on marine areas represent sea surface elevation in centimeters. The record of Paraleptuca splendida in Da Nang was reported in Balss (1922) and Austruca lactea in Huong Phong, Thua Thien was recorded by Wada (2019).