Atergatopsis alcocki ( Laurie, 1906 )

Iwasa-Arai, Tammy, McCallum, Anna W. & Taylor, Joanne, 2015, Oceanic Shoals Commonwealth Marine Reserve survey reveals new records of xanthid crabs (Crustacea: Brachyura: Xanthidae) from northern Australia, Memoirs of Museum Victoria 73, pp. 1-11 : 5-6

Atergatopsis alcocki ( Laurie, 1906)

( Figure 1G )

Actaea alcocki Laurie, 1906: 403 .— Odhner, 1925: 43, pl. 3, fig.

4.— Balss, 1938b: 54, pl. 2, figs 3-4. Xantho bowensis . — Rathbun, 1923:103, pl. 20, figs 1-3. Atergatopsis alcocki .— Guinot, 1969: 232, fig. 15a-c.— Sakai,

1976: 413, fig. 218.— Serène, 1984: 141 (key), 142 (key).

Aff. Atergatopsis alcocki .— Serène, 1984: 143 (list), pl. 20 E.

Material examined. NMV J46930 , 1 male, Cb = 32.4 mm, Cl = 22.4 mm (acq. 118) Survey SS 2012t 07, Stn 02, 11°13.78'–13.78'S, 134°44.47'– 44.44'E, 23.3 m, Benthic sled, 17/10/2012 .

Colour in preservative. Carapace brown, darker in the first half, until last anterolateral tooth; ambulatory legs brown/orange; chelipeds brown with black chelae; abdomen beige.

Remarks. The specimen from the Timor Sea agrees well with the description in Laurie (1906). The holotype is described by Laurie as yellowish with a circular brown patch in the gastric region in live specimens. The single male specimen from the Timor Sea lacked the brown patch as does the specimen described by Rathbun (1923, plate 20) collected in Queensland, Australia.

Distribution. Sri Lanka, Singapore, Japan (Kii Peninsula), Australia (Queensland and Northern Australia) ( Laurie, 1906; Rathbun, 1923; Sakai, 1976). Depth range 15– 35 m.

Figures

Figure 1. A, Actaeodes mutatus Guinot 1976, female, 18.1 X 11.5 mm (NMV J46921); B, Paractaea rufopunctata plumosa Guinot, in Sakai, 1976, male, 29.1 X 19.7 mm (NMV J46922); C, Euxanthus sp., male, 8.12 X 5.83 mm (NMV J46923); D, Liomera edwardsi Kossmann, 1877, male, 9.37 X 5.83 mm (NMV J46927); E, Liomera margaritata, male, 16.3 X 9.8 mm (NMV J46928); F, Atergatopsis granulata A. Milne Edwards, 1865, female, 19.6 X 12.9 mm (NMV J46929); G, Atergatopsis alcocki, male, 32.4 X 22.4 mm (NMV J46930); H, Lophozozymus dodone (Herbst, 1801), male, 16.7 X 10.4mm (NMV J46931). Photos: T. Iwasa-Arai.