Austinixa aidae ( Righi, 1967 )

Mantelatto, Fernando L., Tamburus, Ana Francisca, Magalhães, Tatiana, Buranelli, Raquel C., Terossi, Mariana, Negri, Mariana, Castilho, Antonio L., Costa, Rogério C. & Zara, Fernando J., 2020, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: III. Infraorder Brachyura Latreille, 1802, Zootaxa 4872 (1), pp. 1-108 : 54-55

Austinixa aidae ( Righi, 1967)

( Figure 17A )

Pinnixa aidae Righi, 1967: 107 , fig. 21–26.

Material examined. Brazil, São Paulo: 2 ♂, 1 ♀, CCDB 2187 , Ubatuba, Praia Perequê-Açu, colls. D. Peiró et al .,

29.i.2005; 8 ♂, 15 ♀ (1 ♀ ov), CCDB 2194 , Ubatuba, Praia Perequê-Açu , coll. F. Mantelatto , 17.vii.2004; 1 ♀, CCDB 2191 , São Sebastião, Praia Baraqueçaba , coll. F. Mantelatto , 09.xi.2004; 1 ♂, CCDB 5624 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 4 ♂, CCDB 6010 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 1 ♀, CCDB 6015 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 1 ♂, CCDB 6016 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 1 ♀ ov, CCDB 6017 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 1 ♀ ov, CCDB 6018 , São Sebastião, Praia Baraqueçaba , colls. F. Mantelatto et al ., 02.xii.2014; 2 ♂, 9 ♀ (6 ♀ ov), CCDB 6019 , São Sebastião , Praia Baraqueçaba, colls. F. Mantelatto et al ., 02.xii.2014.

Distribution. Western Atlantic—Tobago, and Brazil (Amapá, Pará, Maranhão, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Bahia, Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul) ( Melo 1996, 1998; Dall’Occo et al. 2004; Coelho et al. 2008; Pachelle et al. 2016).

Remarks. Previous records in São Paulo include Ubatuba ( Mantelatto & Cuesta 2010; Palacios-Theil et al. 2009, 2016) and Caraguatatuba (Ocampo et al. 2013). It was allocated in the genus Austinixa Heard & Manning, 1997 together with other six species, among them A. cristata and A. patagoniensis ( Heard & Manning 1997) that occur along the Brazilian coast ( Melo 1996). This species was previously referred as Pinnixa aidae ( Melo 1996, 1998; Bezerra et al. 2006). Several specimens collected and morphologically identified as A. cristata were confirmed as A. aidae using molecular sequences comparison and according to Palacios-Theil & Felder (2020), A. cristata is restrict to north hemisphere (Gulf of Mexico and U.S. Atlantic coasts). Sequences accession number (GenBank): CCDB 6018—16S ( MT849290 ) (present study), COI ( JX839528 ) (Ocampo et al. 2013).

Figures

FIGURE 17. Families Pinnotheridae and Geryonidae. A) Austinixa aidae (Righi, 1967) (CCDB 5624). B) Austinixa patagoniensis (Rathbun, 1918) (CCDB 5626). C) Clypeasterophilus stebbingi (Rathbun, 1918) (CCDB 5522). D) Dissodactylus crinitichelis Moreira, 1901 (CCDB 5622). E) Chaceon ramosae Manning, Tavares &Albuquerque, 1989 (CCDB 6166).Animals from Brazil, São Paulo state, Ubatuba. Sex: male (A, B, D), female (C, E). Scale bars (mm): A—5; B—5; C—3; D—3; E—70. Photographs by R.C. Buranelli.