Parastylodactylus bimaxillaris ( Bate, 1888 )

Cleva, Régis, 2008, Stylodactylidae and Bathypalaemonellidae (Crustacea: Decapoda: Caridea) from the PANGLAO 2004 and 2005 expeditions to the Philippines, with description of a new species of Stylodactylus A. Milne - Edwards, 1881, Zootaxa 1813, pp. 29-41 : 34-35

Parastylodactylus bimaxillaris ( Bate, 1888)

( Fig. 3 C)

Stylodactylus bimaxillaris Bate, 1888: 855 , pl.138, fig. 3; Balss, 1914: 27; 1925: 239; Yokoya, 1933: 15; Calman, 1939: 188; Hayashi & Miyake, 1968: 599, fig. 5; Miyake, 1982: 25 (not pl.9, fig. 4 = Stylodactylus multidentatus Kubo, 1942 ).

Parastylodactylus bimaxillaris— Chace, 1983: 8, fig. 4; Chan & Yu, 1985: 289, pl. I A–D (colour photographs); Cleva, 1990a: 115, figs. 11a, 12a; 1994: 62; 1997: 397, fig. 4F (colour photograph); 2004: 505.

Not Stylodactylus bimaxillaris— Calman, 1925: 16; Barnard, 1950: 652, fig. 122 f–h (= Stylodactylus stebbingi Hayashi & Miyake, 1968 ).

Not Stylodactylus bimaxillaris— Miyake, 1982, pl. 9, fig. 4 (= Stylodactylus multidentatus Kubo, 1942 ).

Material examined. Philippines, Panglao I., stn. CP2381, 8°43.3’N – 123°19.0’E, 275–280 m, sandy substrate, 28 May 2005: 1 ovig. female 8.0 mm.

Remarks. The rostrum displays 25 dorsal mobile spines (seven on the carapace proper) and five ventral. The RL/CL ratio is about 1.8.

Colouration. Published photographs of freshly collected specimens of this rather common species are rare. The colouration appears variable. Chan & Yu (1985) described three different colour patterns, of which the pink-red is the commonest ( Chan & Yu, 1985: 290, pl. 1 A–D; Cleva, 1997, fig. 4F). Of the two ovigerous females photographed during the SANTO 2006 Expedition to Espiritu Santo I. ( Vanuatu) the colour of body is pale pinkish with translucent rostrum; all appendages are also pale pinkish and more or less translucent. Photo given by Cleva (1997) is also of a Vanuatu specimen.

Distribution. Widespread. Indo-West Pacific distribution, between 66–608 m: South Africa, 118 m ( Hayashi & Miyake, 1968); Mozambique, 112 m ( Hayashi & Miyake, 1968); Madagascar, 200–500 m (Cleva, 1990); Zanzibar, 238–463 m ( Balss, 1925; Calman, 1939); Gulf of Aden, 220 m ( Calman, 1939); Indonesia, 210–411 m ( Cleva, 1997); Taiwan, 66–546 m ( Chan & Yu, 1985; Cleva, 2004); East China Sea, 111–118 m ( Hayashi & Miyake, 1968); Korea Strait, 150 m ( Hayashi & Miyake, 1968); Japan, 100–152 m ( Balss, 1914; Yokoya, 1933; Miyake, 1982); Admiralty Islands (off New Guinea), 274 m ( Bate, 1888); Australia, 434–450 m ( Cleva, 1994); New Caledonia, 250–608 m (Cleva, 1990; 1997); Vanuatu, 344–350 m ( Cleva, 2004); Fiji Islands, 282–389 m ( Cleva, 2004); Solomon Islands, 191–402 m ( Cleva, 2004). It has been collected between 160 and 481 m in the Philippines ( Chace, 1983; Cleva, 1990).

Figures

FIGURE 3. A, Stylodactylus gracilis new species, female 15.5 mm, holotype, PANGLAO 2005, stn. CP 2386; B, Stylodactylus multidentatus, female 14.0 mm, PANGLAO 2005, stn. CP 2409; C, Parastylodactylus bimaxillaris, ovigerous female 8.0 mm, PANGLAO 2005, stn. CP 2381; D, Parastylodactylus longidactylus, ovigerous female 5.9 mm, PANG- LAO 2005, stn. CP 2343; E, Bathypalaemonetes brevirostris, ovigerous female 9.9 mm, PANGLAO 2005, stn. CP 2343.