(Figure 3C)
Synalpheus fritzmülleri Coutière, 1909: 35, fig. 18.
Material examined. Brazil, São Paulo: 3 ind (2 ♀ ov), CCDB 906, Ubatuba, Enseada de Ubatuba, Praia Itaguá, coll. F. Mantelatto & A. Fransozo, 23.i.2003; 9 ind (1 ♀ov), CCDB 3511, Ubatuba, Enseada de Ubatuba, Praia Itaguá, ix.2008; 34 ind (13 ♀ov), CCDB 3416, Ubatuba, Enseada de Ubatuba, Praia Itaguá, coll. F. Mantelatto et al., 22.ii.2011; 14 ind (8 ♀ov), CCDB 3833, Ubatuba, Enseada de Ubatuba, Praia Itaguá, on Schizoporella, coll. I. Leone et al., 25.i.2012; 11 ind (2 ♀ov), CCDB 4860, Ubatuba, Enseada de Ubatuba, Praia Itaguá, on Schizoporella, 16.x.2012; 12 ind (4 ♀ov), CCDB 6141, Ubatuba, Enseada Ubatuba, Praia Itaguá, on Schizoporella, coll. F. Zara & M. Terossi, 09.iv.2013; 2 ind (1 ♀ ov), CCDB 3506, Ubatuba, Praia Grande, coll. F. Mantelatto et al., 22.ii.2011, on Phragmatopoma reefs; 1 ind, CCDB 5267, Ubatuba, Ilha Vitória, 11.iv.2013; 1 ind, CCDB 3838, Cananéia, on rocks, coll. R. Costa, 29.viii.2011; 1 ind, CCDB 5761, Cananéia, coll. R. Costa, 18.viii.2012.
Distribution. Western Atlantic—Bermuda, USA (North Carolina to Florida), Bahamas, Gulf of Mexico, Mexico (Yucatán) to Venezuela, Brazil (São Pedro and São Paulo Archipelago, Atol das Rocas, Trindade and Martim Vaz islands, Ceará to Santa Catarina). Central Atlantic—Ascension and Saint Helena Islands (Christoffersen 1979; 1998; Holthuis et al. 1980; Manning & Chace 1990; Anker et al. 2012; 2016).
Previous records. Ubatuba (Christoffersen 1979; Duarte & Nalesso 1996; Morgado & Tanaka 2001); São Sebastião (Christoffersen 1979; Nalesso et al. 1995; Duarte & Nalesso 1996; Amaral et al. 2010; Anker et al. 2012); São Sebastião Island (Municipality of Ilhabela), São Sebastião Channel, Santo Amaro Island (Municipality of Guarujá), Santos and Itanhaém (Christoffersen 1979).
Remarks. Synalpheus fritzmuelleri has a quite variable morphology and may require a complete study integrating morphology and DNA analyses to verify if it is a species complex (Anker et al. 2012). GenBank accession number: CCDB 3416— COI (KU313015).