Galathea mauritiana Bouvier, 1914

Dong, Chao & Li, Xinzheng, 2010, Reports of Galathea Fabricius, 1793 (Crustacea: Decapoda: Anomura: Galatheidae) from Chinese waters, with descriptions of two new species, Zootaxa 2687, pp. 1-28 : 13-15

Galathea mauritiana Bouvier, 1914

( Fig. 8 )

Galathea affinis Ortmann, 1892: 252 , pl. 11, figs 9a, i (type locality: Fiji Islands) (junior homonym of the fossil Galathea affinis Ristori, 1886 ). — Miyake & Baba 1966: 57, figs 1, 2; 1977: 247.

Galathea mauritiana Bouvier, 1914: 5 (type locality: Mauritius Islands). — Bouvier 1915: 200, figs 10, 11. — Collins 1995: 61 — Baba et al. 2008: 73. — Baba et al. 2009: 115, figs 94–96.

Material examined. South China Sea. Hainan Island: MBM 150279, 1 ovigerous female (3.6 mm), Yalong Bay, Yezhu Island, 6–11 m, coral and crinoides, 19 Nov.1990; MBM 150284, 1 female (4.5 mm), Yezhu Island, CN 92C-242, 92C-243, DC, 19–21 Mar.1992. Xisha Islands: MBM150075, 6 males (3.2–3.9 mm), Celiang Beach, CN 58C-6272, 28 Apr.1958; MBM150077, 1 male (3.4 mm), 3 ovigerous females (2.6–3.3 mm), Wude Island, CN 58C-068, 30 Mar.1958; MBM 150115, Shanhu Island, 1 male (1.8 mm), CN 80X- 147, 19–21 May 1980; MBM 150118, 1 ovigerous female (2.2 mm), coral, 25 Mar.1975; MBM 150119, 1 ovigerous female (2.5 mm), Xishazhou, 45–50 m, 4 Apr.1975; MBM 150120, 1 ovigerous female (2.9 mm), CN 80X- 0 59, May 1980; MBM 150122, 1 ovigerous female (3.2 mm), Jinqing Island, CN 131, 9 May 1980; MBM 150127, 3 males (2.0– 2.7 mm), 1 ovigerous female (3.1 mm), Jinqing Island, CN 80X- 131, 9 May 1980; MBM 150136, 2 males (3.9, 4.1 mm), 3 ovigerous females (3.3–4.0 mm), Wude Island, CN 57- P037038/039, coral, AT; MBM 150137, 1 female (3.4 mm), Jinyin Island, 30 May 1975; MBM 150138, 2 males (2.6, 3.8 mm), 3 females (2.5–4.1 mm), Jinyin Island, CN 75-X 179, 24 May 1975; MBM 150143, 1 male (2.3 mm), Chenhang Island, 20 May 1975; MBM 150145, 1 male (2.2 mm), Chenhang Island, CN 75- X 159, 22 May 1975; MBM 150325, 2 ovigerous females (2.0, 3.0 mm), Zhaoshu Island, CN 80X- 030, 7 May 1980; MBM 150242, 20 males (1.9–3.2 mm), 13 females (2.1–3.7 mm), 2 ovigerous females (2.5, 2.9 mm), Dong Island, CN 80X- 171, 28–31 May 1980; MBM 150315, 3 females (2.4–3.4 mm), Jingqing Island, CN 80X- 124A, 19 May 1980; MBM 150317, 1 female (3.2 mm), Shi Island, CN 81X-C-204, 2–4 Jul.1981; MBM 150317, 2 males (3.3, 4.2 mm), 1 ovigerous female (2.8 mm), Yongxing Island, 16 Mar.1980; MBM 150319, 1 male (1.6 mm), 1 ovigerous female (2.6 mm), Chenhang Island, CN 80X- 119, 18 May 1975; MBM 150321, 7 males (2.4–3.7 mm), 4 ovigerous females (2.7–3.6 mm), Chenhang Island, CN 58C-410, 12 Nov.1958; MBM 150327, 7 males (2.3–3.7 mm), 3 females (2.0– 3.9 mm), 1 ovigerous female (2.6 mm), Yongxing Island, CN 80X- 208, 11–13 Jul.1980; MBM 150330, 2 males (3.4, 2.8 mm), 1 ovigerous female (2.5 mm), Shi Island, coral, 14–15 May 1957; MBM 150333, 1 ovigerous female (2.8 mm), Dong Island, St. 3-7, 19 Jul.1975; MBM 150339, 2 males (3.8, 2.3 mm), 3 females (2.6–3.7 mm), Shi Island, CN 75-X 021, 10 Oct.1975; MBM 150340, 3 males (2.0– 3.9 mm), 2 ovigerous females (2.9, 1.7 mm), Lingyangjiao, CN 75- X 217, 28 May 1975; MBM 150347, 9 males (1.7–3.8 mm), 1 female (2.2 mm), 7 ovigerous females (2.5–3.8 mm), Jinqing Island, CN 80X- 129, 19 May 1980; MBM 150348, 1 ovigerous female (3.2 mm), CN 81X-C- 88C, 23 May 1981; MBM 150349, 10 males (2.5–4.2 mm), 2 females (2.7, 3.1 mm), 3 ovigerous females (2.3– 3.5 mm), Shi Island, CN 80X- 045, 10 May 1980; MBM 150350, 3 males (2.9–3.5 mm), 1 ovigerous female (3.4 mm), Beijiao, CN 58C-026, 23 Mar.1958; MBM 150355, 9 males (2.5–4.3 mm), 9 females (2.2–3.8 mm), 9 ovigerous females (2.9–4.1 mm), Shanhu Island, CN 80X- 144, 19–21 May 1980; MBM 150365, 1 ovigerous female (3.9 mm), Yongxing Island, CN 80X- 043, 9 May 1980; MBM 150368, 1 male (3.1 mm), 1 ovigerous female (2.1 mm), Chenhang Island, CN 81X-C-2, 16 May 1981; MBM 150370, 2 males (2.5, 2.5 mm), 1 ovigerous female (2.5 mm), Celiang Beach, CN 58C-627, 28–29 Apr.1958; MBM 150377, 1 male (2.6 mm), 3 females (2.2–3.1 mm), Jinqing Island, CN 81X-C-52a, 19 May 1981; MBM 150382, 2 males (1.4, 1.7 mm), Xishazhou, 5 Apr.1975; MBM 150387, 8 males (2.0– 3.9 mm), 2 ovigerous females (2.3, 2.7 mm), Jinyin Island, CN 80X- 087, 14 May 1980; MBM 150389, 1 male (2.8 mm), 2 females (2.8, 3.2 mm), Jinqing Island, CN 75-X 167, 23 May 1975; MBMB 150385, 8 males (2.2–3.7 mm), 3 females (2.7–3.0 mm), Yongxing Island, CN 81X-C- 95, 31 May to 1 Jul.1981. Nansha Islands: MBM 150158, 1 ovigerous females (3.1, 3.2 mm), Sanjiaojiao, CN 93-102, dead coral, 24 May 1993; MBM 150160, 1 male (2.7 mm), 1 ovigerous female (2.2 mm), Chiguajiao, 16 Apr.1999; MBM 150164, 2 males (1.4–2.3 mm), 2 females (1.3, 2.6 mm), Nanxunjiao, 7 Apr.1999; MBM 150165, 1 female (3.2 mm), 1 ovigerous female (2.6 mm), Yongshujiao, CN 93-044, 18 May 1993; MBM 150169, 1 ovigerous female (3.8 mm), Anyejiao, CN 93-074, 23 May 1993; MBM 150176, 1 male (3.1 mm), 1 ovigerous female (3.4 mm), Chiguajiao, CN SSFVI 6-25, coral, 13 May 1989; MBM 150194, 1 female (3.0 mm), Xinyijiao, CN SSFJ 9-27, 1– 3 m, coral, 30 May 1990; MBM 150197, 6 males (1.9–3.1 mm), 7 ovigerous females (2.5–3.3 mm), Banlujiao, CN SSFV 2-42, coral, 19 Sep.1988; MBM 150202, 2 males (3.0, 3.7 mm), 1 ovigerous female (2.5 mm), Yongshujiao, CN SSFJ 1-13, 3 m, 17 May 1990; MBM 150203, 2 ovigerous females (3.4, 3.4 mm), Menzijiao, CN SSFJ 7-15, coral, 25 May 1990; MBM 150204, 1 ovigerous female (2.7 mm), Zhubijiao, 10 Apr.1990; MBM 150206, 1 female (2.6 mm), 1 ovigerous female (3.2 mm), Zhubijiao, 30 May 1993; MBM 150210, 1 male (5.3 mm), Dongmenjiao, CN SSFJ 3-13, 1– 3 m, coral, 20 May 1990; MBM 150215, 4 males (2.1–3.6 mm), 4 ovigerous females (2.4–3.4 mm), Xiannvjiao, CN 93-130, dead coral, 28 May 1993; MBM 150218, 2 males (1.4, 3.5 mm), 4 ovigerous females (2.4–3.0 mm), Banyuejiao, 28 Sep.1994; MBM 150226, 1 female (2.6 mm), Chiguajiao, CN SSFJ 2- 16, 19 May 1990; MBM 150233, 1 male (3.1 mm), Wufangjiao, CN SSFJ 8-84, 1– 4 m, coral, 6–7 May 1990; MBM 150235, 2 males (2.7, 3.2 mm), Da’aijiao, CN SSFJ 6-36, 1– 3 m, coral, 26 May 1990; 2 males (2.2, 3.3 mm), 1 ovigerous female (2.9, 3.3 mm), Zhubijiao, St. 8, CN 24-21B3, 2.5 m, coral, 4 May 2004.

Distribution. Previously known from Red Sea, Madagascar and Mozambique Channel, Comoro Islands, Farquhar Islands, Cöetivy Islands, Mauritius, Saya de Malha Bank, Chagos Archipelago, Gorong Island, Timor, Biak I. and Hollandia, New Guinea, Ternate, Taiwan, Ishigaki-jima, Okinawa-jima, Amami-oshima, Ryukyu Islands, Palau Islands and Yap Island, Fiji Islands, Ellice Islands, Loyalty Islands, Tuamotu Archipelago, French Polynesia; intertidal to 48 m. Now also known from South China Sea; intertidal to 50 m.

Remarks. The species is unique among congeners from the Indo-West Pacific in having the pterygostomian flap with one or two spines on the anterior upper margin near the linea anomurica and in the Mxp3 merus having a strongly median spine on the flexor margin. Seven of the specimens examined (two males and five ovigerous females of MBM 150333 and MBM 150215) have two spines on the flexor margin, the distal of which is much smaller than the proximal one.

Figures

FIGURE 8. Galathea mauritiana Bouvier, 1914, MBM 150210, male. A, carapace and abdomen, dorsal view; B, left cephalic region, showing antennular and antennal peduncles, ventral view; C, endopod of right Mxp 3, distal segments omitted, lateral view; D, right P 1, dorsal view; E, right P 2, lateral view; F, right P 3, lateral view; G, right P 4, lateral view; H, sternal plastron; I, pterygostomian flap. Scales = 1 mm.