Trapezia bidentata (Forskål, 1775)

Sun, Yu-Li, Jiang, Wei & Sha, Zhong-Li, 2024, Shallow-water Trapezioidea (Decapoda: Brachyura) from the South China Sea, including two new records, and notes on Tetralia glaberrima Herbst, 1790, Zootaxa 5476 (1), pp. 393-423 : 407

Trapezia bidentata (Forskål, 1775)

( Fig. 7B )

Cancer bidentatus Forskål, 1775: 90 .

Trapezia bidentata .— Davie 2002: 498.— Castro et al. 2004: 49 .— Castro 2009: 272; 2011: 80 .— Ng et al. 2008: 186.— Liu et al. 2008: 792 (list) (Hainan Island, the Xisha Islands).— Poupin 2018: 39, fig. 12H ( Mayotte Island)— El-Sayed 2019: 46 (Red Sea).

Grapsillus subinteger MacLeay, 1838: 67 .

Trapezia cymodoce var. edentula Laurie, 1906: 410 .

Trapezia ferruginea Latreille, 1825: 695 .

Trapezia ferruginea var. typica Borradaile, 1900: 589 .

Trapezia miniata Hombron & Jacquinot, 1846: 43 , pl. 4 10–13.

Trapezia subdentata Gerstaecker, 1856: 127 .

Material examined. Zhongsha Islands: Shenhu Shoal, 113°0.7’E 19°30.3’N, 10 m, coll. Shaobo Ma, 4 July 2021, 1 male (15.37 × 13.08 mm), SHAS01 . — Hainan Island: Jiajing Dao, 3 m, coll. Wei Jiang, 28 March 2018, 1 male (7.48 × 6.42 mm), 100-1023. All found in Acropora sp. ( Acroporidae ) .

Geographical distribution. Across Indo-West Pacific and Tropical Eastern Pacific regions. ( Castro 2011).

Remarks. Trapezia bidentata is relatively rare in the South China Sea, and there are few collection records.

Figures

FIGURE 7. A, Quadrella coronata Dana, 1852, male (alcohol fixed specimen) (8.37 × 8.05 mm) (YM191), Western Pacific; B, Trapezia bidentata Forskål, 1775, male (15.37 × 13.08 mm) (SHAS01), Zhongsha Islands, Shenhu Shoal; C, Trapezia cymodoce Herbst, 1801, male (8.45 × 7.07 mm) (LY1752), Xisha Islands: Antelope Reef; D, Trapezia digitalis Latreille, 1828, ovigerous female (7.59 × 5.87 mm) (NS-MJJ-2022-1047), Nansha Islands, Mischief Reef; E, Trapezia digitalis, juvenile (3.34 × 2.67 mm) (NS-YS-2022-1172), Nansha Islands, Fiery Cross Reef.