Pagurus leptonyx Forest & de Saint Laurent, 1968

Pagurus leptonyx Forest & de Saint Laurent, 1968: 128, figs. 81, 85, 86, 89, 90, 100.

Material examined. Brazil, São Paulo: 1 ♂, CCDB 1257, Ubatuba, 23°33ʹ45ʺS, 045°05ʹ45ʺW, colls. R. Biagi & A. Meireles, 01.viii.2001 ; 1 ♂, CCDB 6311, Cananéia, 25°53ʹS, 047°53ʹW, colls. A. Castilho et al., 01.ii.2014; 9 ♂, 6 ♀, 8 j, CCDB 6629, Ubatuba, Praia do Itaguá, 23°26´28.53ʺS, 045º03ʹ51.67ʺW, coll. R. Costa, 07.i.2019 .

Distribution. Western Atlantic— Venezuela, Brazil (Ceará, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina), Uruguay (Coelho & Ramos-Porto 1987; Zolessi & Philippi 1995; Rieger 1998; Melo 1999; Coelho et al. 2007; Nucci & Melo 2007; Fransozo et al. 2011; Meireles et al. 2012).

Remarks. A preliminary molecular phylogeny revealed close relationship among the South American species of the “ provenzanoi ” clade, including P. leptonyx (Olguín & Mantelatto 2013) . Sequences accession numbers (GenBank): CCDB 6629—16S (MT812694), COI (MT811765).