Pseudoliomera speciosa (Dana, 1852)

Pseudoliomera speciosa (Dana, 1852) View in CoL [Jn: Sango-awatsubugani]

( Fig. 2B View Fig )

Actaeodes speciosus Dana, 1852b, p.198 View in CoL ; 1855, pl. 11 fig. 4.

Actaea speciosa View in CoL : A. Milne-Edwards, 1865, p.274. — Alcock, 1898, p.143. — Borradaile, 1902, p.254, fig. 42C. — Klunzinger, 1913, p.179, pl. 1 fig. 3, pl. 6 fig. 1. — Gravely, 1927, p. 146 (in key), pl. 23 fig. 32. — Sakai, 1939, pp.482 (in key), 489, pl. 93 fig. 3. — Barnard, 1950, pp.228 (in key), 232, fig. 43d. — Edmondson, 1962, pp.256 (in key), 261, fig. 13a. — Serène & Bui, 1959, p.293, fig. 2c. — Sankarankutty, 1962, p. 132, figs. 26–27.

Actaeodes nodipes Heller, 1861, p.329 View in CoL pl. 2 fig. 19.

Psaumis glabra Kossmann, 1877, p.27 View in CoL , pl. 1 fig. 4, pl. 3 fig. 11.

Pseudoliomera speciosa View in CoL : Guinot, 1969, p.230, fig. 12. — Sakai, 1976, p.453 (in English), p. 275 (in Japanese), pl. 160 fig. 2. — Chen & Lan, 1978, p.264, pl. 5 fig. 18. — Serène, 1984, pp. 99 (in keys), 101, fig. 59, pl. 13 fig. F. — Dai et al., 1986, pp.295 (in key), 297, fig. 164A-2, pl. 41 fig. 5. — Galil & Vannini, 1990, p. 33, fig. 7F. — Dai & Yang, 1991, pp.318 (in key), 319, fig. 164A-2, pl. 41 fig. 5. — Muraoka, 1998, p. 42. — Poupin et al., 2018, p.62, fig. 17K. — Maenosono, 2018, pp. 25, 29 (in key), figs. 1G–H, 6.

Paractaea speciosa : Deb, 1989, pp. 47 (in key), 53, fig. 19, pl. 9 fig. 4.

Actaea paraspeciosa Ward, 1941 View in CoL : Ooishi, 1970, p.92, pl. 14 fig. 6.

Material examined. Chichi-jima Is. —Diving site Dobu-iso (27°05′24″N, 142°15′08″E), Chichi-jima I., 6–20 m, 1 ♂ (NSMT-Cr 31697; cb 7.2×cl 5.5 mm), 1-VII-2014, H. Komatsu leg.

Remarks. This species originally described as Actaeodes speciosus and then long known as Actaea speciosa , was finally transferred to the genus Pseudoliomera by Guinot (1969). The fine figures were given by Sakai (1939, pl. 93 fig. 3, as Actaea ; 1976, pl. 160 fig. 2), Edmondson (1962, fig. 13a), Serène (1984, pl. 13 fig. F), and Nagai and Nomura (1988, 1 unnumbered fig.), and the photograph in the field was presented by Kawamoto and Okuno (2003, 1 unnumbered fig.). The carapace dorsal surface ( Fig. 2B View Fig ) is distinctly separated into regions covered with pearly granules of good size, with the interregional furrows filled with thick short, dark-colored setae. The most remarkable character is the presence of setae surrounding the horny claw of the first ambulatory dactylus. It was first noticed and figured by Borradaile (1902), and later finely illustrated by Guinot (1969, fig, 12).

Distribution. Widely distributed in the whole Indo-West Pacific from the Red Sea and South Africa to the southern Pacific islands, Hawaii and Japan. Previously recorded from the Ogasawara Islands by Yoshiwara (1901).

Pseudoliomera variolosa ( Borradaile, 1902) View in CoL [Jn: Daizu-awatsubugani] ( Figs. 2G View Fig , 5G View Fig )

Actaea variolosa Borradaile, 1902, p.256 View in CoL , fig. 54. — Serène & Bui, 1959, p.294, figs. 3A, 4B. — Edmondson, 1962, pp.256 (in key), 256, fig. 11d. — Guinot, 1962, p.236, figs. 4–5. — Kensley, 1981, p. 43. — Deb, 1989, pp. 7 (in key), 38, fig. 20, pl. 3 fig. 6.

Pseudoliomera variolosa View in CoL : Guinot, 1967, p. 561 (in discussion). — Chen & Lan, 1978, p. 265, pl. 5 fig. 19. — Serène, 1984, pp. 99 (in key), 100 (in key), 102, fig. 60, pl. 13 fig. C. — Dai et al., 1986, pp.295 (in key), 296, fig. 164A-1, pl. 41 fig. 4. — Dai & Yang, 1991, pp. 317 (in key), 319, fig. 164A-1, pl. 41 fig. 4. — Poupin et al., 2013, fig. 10G. — Poupin et al., 2018, p. 64, fig. 17L. — Maenosono, 2018, pp. 27, 29 (in key), figs. 1I, 7.

Material examined. Haha-jima Is. —Diving site Maguro-ana (26°36′37″N, 142°07′46″E), Mukou-jima I., 1 ♀ (NSMT-Cr 31698; cb 7.6×cl 5.7 mm), 5-VII-2015, H. Komatsu leg.

Remarks. The female specimen examined is generally close to Pseudoliomera hellerii (A. Milne-Edwards, 1865) in the carapace shape, dorsal areolation and setation, but the almost subdivided 2M and the stiff brackish setae are characteristic for P. variolosa ( Borradaile, 1902) ( Fig. 5G View Fig ). In another close relative, P. lata ( Borradaile, 1902) , the carapace dorsal surface is separated into the convex regions by deep furrows and covered with longer, stiff brackish setae ( Fig. 2A View Fig ).

Distribution. Widely distributed in the Indo-West Pacific, from the western Indian Ocean to Hawaii and Japan. New to the Ogasawara Islands.