Speocarcinus lobatus Guinot, 1969

Brandão, Marianna, Coelho-Filho, Petronio Alves & Tavares, Marcos, 2012, A review of the genus Speocarcinus Stimpson, 1859 (Crustacea: Brachyura: Xanthidae), with a key to its species and the description of one new species, Zootaxa 3327, pp. 1-19 : 14-15

Speocarcinus lobatus Guinot, 1969

( Figs. 2 E; 3D; 5D; 6D; 7E)

Speocarcinus lobatus Guinot, 1969: 710 .

Speocarcinus lobatus — Felder 1973: 70; Powers 1977: 116; Abele & Kim 1986: 55; Felder & Rabalais 1986: 548; Camp et al. 1998: 148; Ng et al. 2008: 201; Brandão et al. 2010: 137; Lai et al. 2011: 442.

Material examined. Holotype, male cl 16 mm, cw 12 mm ( USNM 101081), United States, Texas, Sabine Pass, W.G. Hewatt coll., vi.1956. Gulf of Mexico, Florida, off st. Petersburg, R/V Indian Seal, st. 2209, 27 o52’30”N– 83o33’59”W, 13.viii. 1977, 33 m: 1 ovig. female ( USNM 1074433), 1 juv. male ( USNM 1074432), 1 female ( USNM 1074434). Bryan Mound, off Freeport; 24o44’N – 095o15’W, st. 10A3A, 18.x. 1979, 16 m, D.L. Felder det. 1985: 1 male, 1 female ( USNM 228461). Bryan Mound, off Port Aransas, 27o08’18”N – 097o17’24”W, R/V Longhorn, st. m10, 01.xii. 1979, 15 m, D.L. Felder det. 1985: 2 females ( USNM 228462). Louisiana, Eugene I. Lease area, 2000 mi. north of platform, 28°41’51 N–091°37’21W, 27 m: 1 male cl 7.2 mm, cw 10.8 mm ( USNM 187191); 28o13’35”N – 091o41’05”W, st. 17s, 20.viii. 1978, 72 m: 1 juv. male ( USNM 187190), 500 mi. north of Platform, 28o50’N – 091o27’W, st. 24c, 06.i. 1979, 19 m: 1 juv. female ( USNM 187163). Bay Marchand Lease area, 500 mi. east of Platform, 29o02’50”N – 090o09’46”W, st. 2p, 13.i. 1979, 12 m: 1 juv. female ( USNM 187185), 1 female and 1 male ( USNM 187184), 1 juv. male ( USNM 187188); 2000 mi. south of Platform, 29o02’50”N – 090o09’46”W, st. 2p, 13.i. 1979, 12 m: 1 juv. female ( USNM 187187). South Timbalier Lease area, 500 mi. south of Platform, 28o40’02”N – 090o14’43”W, st. 3p, 09.i. 1979, 29 m: 1 juv. female ( USNM 187182), 1 juv. male and 1 female ( USNM 187181), 1 juv. male ( USNM 187183), 1 juv. male ( USNM 187179), 1 juv. male ( USNM 187178), 1 juv. male ( USNM 187169), 1 juv. male ( USNM 187175), 1 juv. male ( USNM 187176), 1 juv. male ( USNM 187180), 1 juv. male ( USNM 187174); east of Platform, 28o34’09”N – 090o24’32”W, st. 4p, 10.i. 1979, 38 m: 1 juv. male ( USNM 187173), 1 juv. female ( USNM 187172), 1 juv. male ( USNM 187167), 1 juv. female ( USNM 187168), st. 4p, 15.i. 1979, 18 m: 2 juv. female ( USNM 187171); north of Platform, 28o53’N – 090o16’W, st. 22c, i. 1979, 21 m: 1 juv. female and 1 juv. male ( USNM 187165), 1 juv. female ( USNM 187164), 1 juv. female ( USNM 187166). West Delta Lease area, 2000 mi. north of Platform, 29o07’42”N – 089o41’25”W, st. 1p, 08.i. 1979, 18 m: 1 juv. female ( USNM 187159), 1 juv. female ( USNM 187160), 1 juv. male ( USNM 187161), 1 juv. female ( USNM 187158), 1 juv. female and juv. male ( USNM 187162), 1 juv. male ( USNM 187156), 2 juv. male ( USNM 187157); 28o57’08”N – 089o41’02”W, st. 6s, 26.viii. 1978, 47 m: 1 juv. male ( USNM 187192). West Delta Lease area, 500 mi. north of Platform, 28o48’34”N – 089o48’34”W, st. 7s, 26.viii. 1978, 61 m: 1 juv. male ( USNM 187194), 1 juv. female ( USNM 187193).

Type locality. Gulf of Mexico, Texas, Sabine Pass.

Description. See Felder & Rabalais (1986).

Remarks. Speocarcinus lobatus was described in great detail by Felder & Rabalais (1986). It mostly resembles young S. carolinensis and for the distinction between these species see under S. carolinensis .

Distribution. Off Mississippi, Louisiana and Texas and the Gulf coast of Florida, between 6 and 65 m.

Figures

FIGURE 2. A – B, Lateral view of right and left chelipeds, respectively. C – H, Habitus, dorsal view. A, C, Speocarcinus amazonicus Brandão, Tavares & Coelho-Filho, 2010, holotype male cl 8 mm, cw 11 mm (MZUSP 23654). B, D, Speocarcinus granulimanus Rathbun, 1894, lectotype male cl 17.5 mm, cw 21 mm (USNM 17461). E, Speocarcinus lobatus Guinot, 1969, holotype male cl 16 mm, cw 12 mm (USNM 101081). F, Speocarcinus meloi D’Incao & Silva, 1991, holotype male cl 12 mm, cw 15.6 mm (MZUSP 9577). G, Speocarcinus monotuberculatus Felder & Rabalais, 1986, holotype female cl 6 mm, cw 7.8 mm (USNM 228459). H, Speocarcinus spinicarpus Guinot, 1969, male holotype cl 16 mm, cw 19 mm (USNM 231701). Note the differences in the chelipeds inner carpal spines. Scale bars: C – F, H, 10 mm; G, 2.5 mm.