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.