Enosteoides palauensis

Osawa, Masayuki, 2016, Enosteoides Johnson, 1970 (Crustacea: Decapoda: Anomura: Porcellanidae) from the Central Philippines, with description of a new species of the genus, Nauplius (e 2016013) 24, pp. 1-11 : 3-4

Enosteoides palauensis

( Nakasone and Miyake, 1968)

( Fig. 1B )

Porcellana melissa Miyake, 1942: 367 (part), text-fig. 27 (not P. melissa Miyake, 1942 ).

Porcellana palauensis Nakasone and Miyake, 1968: 165 , fig. 1, pl. 7–fig. A (type locality: Ngadarák Reef , Palau Islands; low intertidal).

Enosteoides palauensis . — Haig, 1978: 709. — Osawa, 2007: 11; 2009: 165, fig. 4D. — Osawa and McLaughlin, 2010: 110 (list).

Enosteoides hainanensis Yang and Sun, 2005: 19 , figs. 15, 16 (type locality: Hainan Island , South China Sea).

Material examined. Philippines, PANGLAO 2004: Sungcolan Bay , Panglao Island, stn S7, 9°38.5’N 123°49.2’E, 1–4 m, sand with seagrass, 9 June 2004, 1 female parasitized by rhizocephalan (cl 2.6 mm), ZRC 2016.0058 .

Coloration ( Fig. 1B ). Carapace and chelipeds generally white with pale brown tint. Second to fourth pereopods with meri white on proximal 0.7 and remaining part dark red; carpi and propodi entirely dark red; dactyli also dark red proximally and whitish distally.

Distribution. Ryukyu Islands in south Japan, Hainan Island in south China, Palau, and New Caledonia; low intertidal to subtidal depths of 7–31 m; interspace of dead coral block ( Osawa, 2007; 2009). Now also from the Philippine waters.

Remarks. The present specimen agrees well with the original description by Nakasone and Miyake (1968, as Porcellana ) and a short description by Osawa (2009) of E. palauensis . Osawa (2007) considered that E. hainanensis Yang and Sun, 2005 is synonymous with E. palauensi s because the distinctions discussed by Yang and Sun (2005) were insufficient to distinguish the two species based on the re-examination of the type material of E. palauensi s.

The sole specimen examined is parasitized by a rhizocephalan of the family Lernaeodiscidae .

Figures

Figure 1. Entire animal, dorsal view. A,Enosteoides melissa (Miyake, 1942), male (cl 12.6 mm), RUMF-ZC 4310, Okinawa Island; B, Enosteoides palauensis (Nakasone and Miyake, 1968), female parasitized by rhizocephalan (cl 2.6 mm), ZRC 2016.0058, Panglao Island, stn S7; C, Enosteoides turkayi n. sp., holotype, female (cl 4.5 mm), NMCR, Balicasag Island; D, Enosteoides turkayi n. sp., missing specimen, Panglao Island, stn T4.