Salmoneus setosus Manning & Chace, 1990

Anker, Arthur, 2020, Two new species and new records in the alpheid shrimp genera Salmoneus Holthuis 1955 and Deioneus Dworschak, Anker & Abed-Navandi, 2000 in theAtlantic Ocean (Malacostraca: Decapoda), Zootaxa 4786 (3), pp. 345-368 : 354-355

Salmoneus setosus Manning & Chace, 1990

Fig. 6

Salmoneus setosus Manning & Chace 1990: 17 , fig. 9; Anker 2007: 32 , fig. 6; Anker 2010a: 202 ; Anker et al. 2016: 35 , fig. 11E; De Grave et al. 2017: 764.

Material examined. 1 ovigerous specimen (cl 4.0 mm), MNHN-IU- 2019-2302, Mexico, Quintana Roo, Isla Cozumel, 1 km south of Playa Corona, sand flat with coral rubble, deep under large coral rock, 0.5–1 m, leg. A. Anker, 09.07.2010 [fcn COZ3-010 ]; 1 non-ovigerous specimen (cl 1.9 mm), FLMNH UF 41701 , Cayman Islands, Little Cayman Island , McCloy’s Lodge , Heard Sta. 22, rock washings, leg. R. Heard et al., 08.08.1999; 1 non-ovigerous specimen (cl 3.4 mm), FLMNH UF 51922 , Panama, Caribbean coast, Bocas del Toro, Isla Colón , Boca del Drago , 9°24’54.9”N 82°19’52.5”W, coral rubble crevices, leg. M. Leray & P.P.G. Pachelle, 01.04.2019 [fcn PP-131] .

Remarks. Salmoneus setosus , although uncommon and rarely collected, is widely distributed in the tropical western and central Atlantic, with records from Mexico ( Yucatan and Cozumel), Cayman Islands (Little Cayman Island), Panama ( Bocas del Toro), Brazil (Atol das Rocas, Fernando de Noronha, Trindade and Martin Vaz Archipelago) and Ascension Island (type-locality) ( Manning & Chace 1990; Anker 2007, 2010a; Anker et al. 2016; De Grave et al. 2017; present study). The species is herewith recorded from Panama ( Bocas del Toro) and Cozumel Island in Mexico, based on recently collected material. The Cozumel specimen at cl 4.0 mm ( Fig. 6c, d ) is the largest specimen known so far; most of the other previously specimens reported have cl well under 3 mm ( Anker 2007, 2010a; Anker et al. 2016) or at most 3.0 mm, as for instance, the Bocas del Toro specimen ( Fig. 6a, b ). The colour pattern of S. setosus ranges from lemon-yellow in smaller individuals to bright orange-yellow in larger ones ( Fig. 6 ).

Figures

FIGURE 6. Salmoneus setosus Manning & Chace, 1990: non-ovigerous specimen (cl 3.4 mm) from Bocas del Toro, Panama (FLMNH UF 51922) [a, b]; ovigerous specimen (cl 4.0 mm) from Cozumel, Mexico (MNHN-IU-2019-2302) [c, d]; living shrimps in dorsal [a, c] and lateral [b, d] views. Photographs by Paulo P.G. Pachelle [a, b] and the author [c, d].