Percnon sinense Chen, 1977

Percnon sinense Chen, 1977 View in CoL # ( Figs. 27 View Fig , 39D View Fig )

? Percnon affine View in CoL — Hill et al. 1975: 54; Morton 1976: 97; Hill et al. 1978: 76 [not Acanthopus affine H. Milne Edwards, 1853 ].

? Percnon planissimum View in CoL — Hill et al. 1978: 114; Hill and Phillipps 1981: 148, pl. 50d [not Cancer planissimum Herbst, 1804 ].

Percnon affinis View in CoL — Morton 1979a: 112, fig. 6.12; Morton and Morton 1983: 42, fig. 4.4(3), pl. 1A; Morton and Harper 1995: 57, fig. 9(4) [not Acanthopus affine H. Milne Edwards, 1853 ].

Percnon sinense View in CoL — present record.

Taxonomy: Chen (1977).

Type: Holotype ò and paratypes in IOCAS ( Chen 1977).

Type locality: Sanya, Hainan, China.

Distribution: South China, and southern Taiwan (W-J Chen and Lo 2014).

Habitat: Intertidal and shallow subtidal; crevices, often lodged underside of boulders, along exposed rocky shores.

Remarks: Illustrations of Percnon species provided by Hill and Phillipps (1981: pl. 50d; as P. planissimum ), Morton and Morton (1983, pl. 1A: as P. affinis ) and Morton and Harper (1995: fig. 9(4); as P. affinis ) are nearly identical, and very likely represent the same species. The identification to P. affine (H. Milne Edwards, 1853) is incorrect as their specimens do not have the diagnostic, large basal setal patch on the basal part of the chelae (cf. Crosnier 1965; McLay 1989). Recently we have acquired local material of P. sinense , identified readily by the dorsally spinose P5 coxa ( Fig. 27D View Fig ). The coloration of an adult male specimen ( Fig. 39D View Fig ) closely matches the above cited local records. As such, we believe these past records also represent P. sinense .