Viaderiana sentus Ng, Dai and Yang, 1997

Ng, Peter K. L., Lin, Chia-Wei & Ho, Ping-Ho, 2018, Psammoecus hiranoi Yoshida and Hirowatari 2013, Zoological Studies 57 (12), pp. 1-17 : 7-16

Viaderiana sentus Ng, Dai and Yang, 1997

( Figs. 10-13 )

Viaderiana sentus Ng, Dai and Yang, 1997: 156 , fig. 6; Ng et al. 2008: 143.

Material examined: 1 male (8.4 × 6.5 mm)

( NMMBCD 4087), under coral rubble, in coral reef, Hojie, Kentin, 21°57.432'N 120°42.631'E, southern Taiwan, by SCUBA, coll. C.-W. Lin, 8 July 2013.

(A) (C) (B) (D)

(B) (C) (A) (D)

Remarks: This species was described from one male 8.0 × 6.1 mm collected from the South China Sea. This is only the second record of the species and the first from Taiwan. The present specimen agrees well with the descriptions and figures in Ng et al. (1997), except that the distal part of the G1 is slightly longer ( Figs. 3 A-C).

In life, the species is a uniform reddish-brown on all its dorsal surface, with the setae yellowishbrown. The fingers of chela are pigmented light brown with the tips white.

Distribution: The species was described from the Nansha Islands in the South China Sea ( Ng et al. 1997) and now from southern Taiwan.

Figures

Fig. 10. Viaderiana sentus Ng, Dai and Yang, 1997, male (8.4 × 6.5 mm) (NMMBCD4087). A, overall view; B, dorsal view of carapace. © 2018 Academia Sinica, Taiwan

Fig. 11. Viaderiana sentus Ng, Dai and Yang, 1997, male (8.4 × 6.5 mm) (NMMBCD4087). A, frontal view of cephalothorax; B, outer view of chelae; C, ventral view of cephalothorax. © 2018 Academia Sinica, Taiwan

Fig. 3. Heteropilumnus decharmoyi (Bouvier, 1915). A, B, C-E, male (16.8 × 12.7 mm) (NMNST); F, male (13.3 × 9.3 mm) (NMMBCD4084); G, female (8.6 × 5.9 mm) (ZRC 2017.1042). A, anterior thoracic sternum and pleon; B, pleon; C, outer view of right chela; D, outer view of left chela; E-G, right fourth ambulatory leg.