Athanas nitescens (Leach, 1813 [in Leach 1813–1814])

(Figure 2B)

Palaemon nitescens Leach, 1813 [in Leach 1813–1814]: 401.

Material examined. Brazil, São Paulo: 1 ♀ ov, CCDB 4862, Ubatuba, Enseada de Ubatuba, Praia do Cedro, coll. A. Castilho et al., 07.vii.2011 ; 3 ♀ ov, CCDB 3427, Ubatuba, Enseada de Ubatuba, Praia do Cedro, coll. A. Castilho et al., 07.vii.2011 ; 2 ♂, CCDB 424, Ubatuba, Enseada de Ubatuba, Praia do Cedro, coll. A. Castilho et al., 07.viii.2011 ; 1 ♂, CCDB 5509, Ubatuba, Enseada de Ubatuba, Praia Itaguá, coll. F. Mantelatto et al., 02.xii.2014 ; 1 ♂, CCDB 3820, Ubatuba, off shore (35 m), coll. D. Rosa, 5–14.ix.2011 ; 1 ♀ ov, CCDB 5755, Ubatuba, Enseada do Mar Virado, off shore, coll. D. Rosa, 20.ix.2014 ; 1 ♂, CCDB 3480, São Vicente, estuary (4 m), coll. S. Simões & R. Costa, 16.vi.2009; 1 ♀ (parental with larvae), CCDB 4488, Cananéia, 20.v.2012 ; 1 ♀ ov, CCDB 4861, Cananéia, estuary, coll. R. Costa et al., 30.viii.2011 .

Distribution. Eastern Atlantic—Norway to Republic of the Congo, including the Mediterranean. Western Atlantic—Brazil (São Paulo) (Holthuis & Gottlieb 1958; Crosnier 1971; d’Udekem d’Acoz 1999; Almeida et al. 2012b).

Previous records. São Vicente estuary (Almeida et al. 2012b).

Remarks. Athanas nitescens is an exotic alpheid species from the eastern Atlantic, recorded for the first time in São Paulo by Almeida et al. (2012b). Here we collected 11 additional individuals, including seven ovigerous females, from Enseada de Ubatuba and Cananéia. The animals were sampled at an intertidal depth up to 35 m, indicating that the species was successfully introduced to the São Paulo coast. GenBank accession number: CCDB 3480—16S (KU312972).