Uroptychodes grandirostris (Yokoya, 1933)

Mccallum, Anna W. & Poore, Gary C. B., 2013, Chirostylidae of Australia’s western continental margin (Crustacea: Decapoda: Anomura), with the description of five new species, Zootaxa 3664 (2), pp. 149-175 : 153

Uroptychodes grandirostris (Yokoya, 1933)

(Figs. 2, 11C)

Uroptychus grandirostris Yokoya, 1933: 68 , fig. 29 (part).

Uroptychodes grandirostris .—Baba, 2004: 106, fig. 6.—Baba et al., 2009: 28–29, figs 22, 23.

Material examined. Male (cl 10 mm), missing all pereopods except for left P2 and right P3. Western Australia, off Barrow Island (20°58.86'S, 114°43.42'E – 20°59.42'S, 114°43.73'E), 210– 205 m, 10 Jun 2007 (stn SS05/2007 006), CSIRO acquisition number 0 15, NMV J56125 .

Colour. Body white, with 3 pairs of narrow longitudinal reddish-orange stripes on the carapace extending on to the abdomen.

Distribution. Japan, East China Sea, Taiwan and NW Australia. 165– 223 m.

Remarks. This is the first record of the species south of Taiwan and the specimen generally agrees well with the Taiwanese material described by Baba et al. (2009). They remarked on the variation in the degree of dentition on the carapace, which can be minimal as seen in the neotype or densely denticulate in some specimens. This specimen is highly denticulate: the carapace is covered with dense denticles; the large lateral spines are denticulate on their lateral margins; the pleura of abdominal somites 2 and 3 are denticulate and the dorsal surface of somite 2 granular; the surface of sternites 3 and 4 is tuberculate. In the material described by Baba (2004) the propodus of pereopod 3 has a distal pair of spines preceded by at most five spines, while the male examined here has six spines preceding the distal pair. The colour of the north-western Australian specimen generally agrees well with the image of an ovigerous female from Taiwan (Baba et al. 2009). Both have three pairs of narrow longitudinal reddishorange stripes on the carapace, but the body of the carapace is white in the Australian specimen whereas the Taiwan specimen is pale pink-orange between the two lateral stripes and darker between the submedian and sublateral two.