Synalpheus fritzmuelleri Coutière, 1909

Anker, Arthur, Tavares, Marcos & Mendonça, Joel B., 2016, Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic, Zootaxa 4138 (1), pp. 1-58 : 37-38

Synalpheus fritzmuelleri Coutière, 1909

( Fig. 11 G, H)

Synalpheus fritzmuelleri Coutière 1909: 35 , fig. 18; Williams 1984: 102, fig. 70a; Manning & Chace 1990: 22; Souza et al. 2011: 48; Anker et al. 2012: 41, figs. 26–28; Santos et al. 2012: 55, fig. 4E; De Grave et al. 2014: 6; Soledade et al. 2015: 62.

[for more complete synonymy prior to 2012 see Anker et al. (2012)]

Material examined. Brazil: 2 males, MZUSP 30256, Trindade Island, Ponta do Monumento, 20°30’10.3”S – 29°20’36.1”W, depth: 12.1 m, coll. J.B. Mendonça, 16.vi.2012; 1 ovig. female, MZUSP 33300, Trindade Island, Ponta do Monumento, 20°30’10.3”S – 29°20’36.1”W, depth: 15 m, coll. J.B. Mendonça, 02.xi.2014; 1 male, MZUSP 34118, Trindade Island, Enseada dos Portugueses, Farol, 20°29’52.3”S – 29°19’15.6”W, depth: 12.6 m, coll. J.B. Mendonça, 06.vii.2015; 1 ovig. female, MZUSP 33320, Trindade Island, Enseada dos Portugueses, Ponta da Calheta, 20°30’18.7”S – 29°18’31.6”W, depth: 16.3 m, coll. J.B. Mendonça, 05.xi.2014; 1 ovig. female, MZUSP 33248, Trindade Island, Enseada dos Portugueses, Ponta da Calheta, 20°30’18.7”S – 29°18’31.6”W, depth: 16.6 m, coll. J.B. Mendonça, 08.v.2014; 1 female, MZUSP 33371, Trindade Island, Ponta Norte, 20°29’32.0”S – 29°19’46.5”W, depth: 13.7 m, coll. J.B. Mendonça, 05.xi.2014; 1 ovig. female, MZUSP 31105, Trindade Island, Ponta Norte, 20°20’18.3”S – 29°20’03.1”W, depth: 15.6 m, coll. J.B. Mendonça, 03.vii.2012; 1 female, MZUSP 30348, Trindade Island, Crista do Galo, 20°29’22.1”S – 29°20’03.1”W, depth: 2.5 m, coll. J.B. Mendonça, 17.vii.2012; 1 male, MZUSP 31022, Trindade Island, Praia da Tartaruga, 20°31’03.8”S – 29°18’08.4”W, tide pool, depth: 0.5 m, coll. J.B. Mendonça, 01.vii.2012; 1 ovig. female, MZUSP 33341, Trindade Island, Praia dos Portugueses, Rampa Nova, 20°30’17.7”S – 29°18’56.7”W, depth: 10.2 m, coll. J.B. Mendonça, 18.iv.2014; 1 ovig. female, MZUSP 34130, Trindade Island, Ilha da Racha, 20°30’26.5”S – 29°20’40.0”W, depth: 23 m, coll. J.B. Mendonça, 03.vii.2015; 1 female, MZUSP 30320, Trindade Island, Enseada da Cachoeira, Farrilhões, 20°31’22.4”S – 29°19’52.0”W, depth: 11.8 m, coll. J.B. Mendonça, 20.vi.2012; 1 male, MZUSP 34131, Martin Vaz Island, 20°28’28.4”S – 28°51’24.5”W, depth: 21.4 m, coll. J.B. Mendonça, 21.vi.2015. Size of largest male: cl 5.2 mm ( MZUSP 30256); largest female: cl 5.6 mm ( MZUSP 33320). Numerous additional specimens (not listed above) are deposited in MZUSP.

Description. See Coutière (1909) for original description and illustrations, and Anker et al. (2012) for additional figures and colour photographs; additional photographs of the Brazilian material in Santos et al. (2012) (see also Fig. 11 G, H).

Distribution. Western-central Atlantic: Saint Helena Island; Ascension Island; North Carolina to Florida; Gulf of Mexico; throughout Caribbean Sea; Bermuda; Brazil: Ceará to Santa Catarina, Abrolhos Islands, Atol das Rocas , São Pedro & São Paulo Archipelago, Trindade & Martin Vaz Archipelago (Anker et al. 2012 and references therein; Santos et al. 2012 and references therein; Soledade et al. 2015; present study).

Ecology. In various habitats, from rocky intertidal shores to coral reefs and mangroves with rubble and sponges; in crevices of dead corals, coralline algae, sponges etc.; intertidal to about 50 m.

Remarks. Synalpheus fritzmuelleri , one of the most common and wide-ranging western Atlantic snapping shrimps, was previously reported from numerous Brazilian localities ( Christoffersen 1979, 1998; Anker et al.

2012; Santos et al. 2012; Soledade et al. 2015). Nevertheless, the present material seems to represent the first record of this species from the Trindade and Martin Vaz Archipelago.

Figures

FIGURE 11. Metalpheus rostratipes (Pocock, 1890): A, B — ovigerous female from Enseada dos Portugueses, Trindade Island, Brazil (MZUSP 33293), A — dorsal view; B — lateral view. Prionalpheus gomezi Martínez-Iglesias & Carvacho, 1991: C, D — ovigerous female missing both chelipeds from Enseada dos Portugueses, Trindade Island, Brazil (MZUSP 33360), C — dorsal view; D — lateral view. Salmoneus setosus Manning & Chace, 1990: E — ovigerous specimen from between Ponta da Crista do Galo and Ponta Norte, Trindade Island, Brazil (MZUSP 33391), lateral view. Synalpheus antillensis Coutière, 1909: F — male from Enseada Orelhas, Trindade Island, Brazil (MZUSP 33286), lateral view. Synalpheus fritzmuelleri Coutière, 1909: G, H — ovigerous female from Enseada dos Portugueses, Trindade Island, Brazil (MZUSP 33248), G — dorsal view; H — lateral view. Photographs by J. B. Mendonça.