Uroptychus spinirostris (Ahyong and Poore, 2004)

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 : 165

Uroptychus spinirostris (Ahyong and Poore, 2004)

( Figs. 8 , 12A )

Gastroptychus spinirostris Ahyong and Poore, 2004: 9 –11, fig. 1, Uroptychus spinirostris .— Baba et al., 2008: 43, fig 1H.

Material examined. 1 female (cl 28 mm), 1 male (cl 10 mm), Western Australia, off the Kimberley plateau (13°15.9'S, 123°22.45'E – 13°16.35'S, 123°21.4'E), 390–394 m, 0 7 Jul 2007 (stn SS05/2007 180), CSIRO acquisition number 0 39, NMV J55996 .

Colour. Body and appendages pale pink. Spines on body pink-red, and spines on appendages orange with white tips.

Distribution. North-western and north-eastern Australia, 364– 394 m.

Remarks. The large female collected here is more than twice the size of the original material described from Queensland, and we observed variation in spination and setation compared to the holotype. The large female from north-western Australia has more numerous spines on the carapace, rostrum and sternum than the Queensland holotype. Our large female has three pairs of rostral spines compared with the holotype which has only 2 pairs of spines on the rostrum. While the holotype lacks setae, our female has rows of setae on the dorsal spines. The smaller male collected agrees very well with the Queensland material and thus we believe these differences are allometric.

Figures

FIGURE 8. Uroptychus spinirostris (Ahyong and Poore, 2004), female (28.0 mm), NMV J 55996. A, dorsum. B, carapace and abdomen, lateral. C, sternum. D, abdominal segments 4 – 6, and telson. E, right antenna, ventral. F, right antennule, ventral. G, maxilliped 3, right, lateral. Scales = 5 mm.

FIGURE 12. A, Uroptychus spinirostris (Ahyong and Poore, 2004), NMV J 61768. B, Uroptychus ciliatus (Van Dam, 1933), NMV J 55998. C, Uroptychus flindersi Ahyong & Poore, 2004, NMV J 54995. D, Uroptychus joloensis Van Dam, 1939, NMV J 57247. E, Uropychus nigricapillis Alcock, 1901, NMV J 57245. F, Uroptychus scandens Bendedict, 1902, NMV J 57249. G, Uroptychus taylorae sp. nov. NMV J 55000. H, Uroptychus vandamae Baba, 1988, NMV J 57248. I, Uroptychus worrorra sp. nov., NMV J 56119.