Petrolisthes scabriculus ( Dana, 1852 )

Petrolisthes scabriculus ( Dana, 1852) View in CoL

( Figs. 2A View Figure 2 , 3 View Figure 3 )

Porcellana scabricula Dana, 1852:424 [ type locality: Sulu Sea]. — Dana, 1855: pl. 28 fig. 13.

Porcellana ( Petrolisthes) scabricula : De Man, 1888: 411.

Petrolisthes scabriculus View in CoL : Haig, 1964: 358, fig. 2. — Haig, 1965: 98. — Nakasone and Miyake, 1968: 107, fig. 4. — Haig, 1979: 120, fig. 1.— Haig, 1989: 98. — Hsieh et al., 1997: 291, figs. 5F, 10. — Osawa, 2007: 28 View Cited Treatment , fig. 8c, d. — Osawa and Chan, 2010: 157, figs. 123, 124. — Osawa, 2014: 260, fig. 2D.

Material examined. 1 male (6.18 × 6.17 mm) ( IO / SS/ANO/00176), Andaman Sea , off Little Andaman Island, India, FOR/ V “Sagar Sampada” station 38806, 10.72°N 92.72°E, 53 m depth, chain dredge, 10.viii.2019, coll. V. P. Padate GoogleMaps .

Taxonomic remarks. Heller (1865) reported Pi. scabricula (= Pe. scabriculus ) from the Nicobar Islands. However, Haig (1965) suggested that the record needed confirmation due to possible confusion with a morphologically close Pe. militaris ( Heller, 1862) . The present specimen confirms the occurrence of Pe. scabriculus from India. The Indian specimen largely agrees with the description and illustrations of Pe. scabriculus provided by Osawa and Chan (2010). Petrolisthes scabriculus is immediately distinguishable from Pe. militaris and its closely similar species Petrolisthes holthuisi Hiller and Werding, 2010 , by a distinct spine on the anterolateral margin of the carapace front, which is absent in the latter two species.

Distribution. Andaman and Nicobar Islands, Gulf of Thailand, Christmas Island, Indonesia, New Guinea, western and eastern Australia, New Caledonia, Loyalty Islands, Chesterfield Islands, Philippines, Nansha Islands in South China Sea, Taiwan, Japan; 1–55 m in bathymetric range ( Haig, 1979; Osawa, 2007; 2014; Osawa and Chan, 2010; present study) ( Fig 1 View Figure 1 ).