Liocarcinus corrugatus ( Pennant, 1777 )

Published, First, 2009, New records of crabs (Decapoda: Brachyura) from the New Zealand region, including a new species of Rochinia A. Milne-Edwards, 1875 (Majidae), and a revision of the genus Dromia Weber, 1795 (Dromiidae), Zootaxa 2111, pp. 1-66 : 43

Liocarcinus corrugatus ( Pennant, 1777)

Fig. 21a, b

Cancer corrugatus Pennant, 1777: 5 , pl. 5, fig. 9.

Portunus strigilis Stimpson, 1858: 38 .

Portunus pusillus — Kirk 1878: 402 (not Portunus pusillus Leach, 1815 = Liocarcinus pusillus ( Leach, 1815))

Portunus borradailei — Bennett 1930: 256, figs 1–4.

Portunus corrugatus — Borradaile 1916: 97, fig. 9. — Chilton & Bennett 1929: 753.

Macropipus corrugatus — Stephenson & Campbell 1960: 92, figs 1E, 2G, pl 2, fig. 4, pl. 5G. — Dell 1968: 20. — Stephenson 1972: 23. — Wear & Fielder 1985: 55, figs 142, 143.

Liocarcinus corrugatus — Hale 1927: 148, fig. 149. — McNeill & Ward 1930: 379. — Powell 1937: 382. — Bennett 1964: 65. — Manning & Holthuis 1981: 84. — McLay 1988: 216, fig. 48a–d. — Davie 2002: 459. — Takeda & Webber 2006: 200. fig. 5C. — Ng et al. 2008: 149 (list).

Material Examined. Whangarei: 1 male, 33.9 mm x 27.2 mm, 35°47’S, 174°24’E, WRE507 CB, 23 Nov. 2002 ( NIWA 48747 ) ; 1 female, 15.4 mm x 13.2 mm, WRE607 CB, 19 Nov. 2002 ( NIWA 48734 ); 1 ovigerous female, 21.6 mm x 18.0 mm, 35°47’S, 174°24’E, WRE608 CB, 19 Nov 2002 ( NIWA 48735 ) ; 1 male, 16.3 mm x 13.6 mm, 35°47’S, 174°24’E, WRE622 CB, 21 Nov. 2002 ( NIWA 48736 ) .

Little Barrier Is: AQ2377, 1 male, 12.6 mm x 10.5 mm, 36°12’S, 175°05’E, 64 m, Hinemoa , 29 Dec. 1914.

Tauranga: 1 male, 6.7 mm x 6.0 mm, 37°39’S, 176°10’E, TG142 CB, 8 Mar. 2002 .

Chatham Rise, Giggenbach Seamount: NIWA 18022 , 1 female, 19.2 mm x 16.1 mm, 42°43.10’S, 180°5.43’E, 109 m, stn KOK0505/45, 16 Apr. 2005 .

Remarks. The species of Liocarcinus are in urgent need of revision ( Davie, 2002, p459).The detailed synonymy presented here is limited to Australasia, thereby including and verifying all the records therefrom. The only species liable to be confused with L. corrugatus is Nectocarcinus antarcticus . The main differences between them are: frontal carapace margin with 3 evenly rounded lobes (4 small sub-acute teeth in N. antarcticus ), anterolateral carapace margin cut into 5 prominent teeth (margin cut into 4 small teeth), and tips of dactyli on swimming legs (P5) pointed (tips bluntly rounded). However these features refer to adults and smaller specimens have anterolateral teeth that are relatively larger (see below for ontogenetic changes).

Distribution. Supposedly includes the Atlantic Ocean and the Indo-West Pacific region. Known from Australia and New Zealand. The record from the Chatham Rise extends the southern limit to 42°43’ S. Depth range is 0–137 m (being a swimming crab this does not mean intertidal).