Megalobrachium mortenseni Haig, 1962

Mantelatto, Fernando L., Miranda, Ivana, Vera-Silva, Ana L., Negri, Mariana, Buranelli, Raquel C., Terossi, Mariana, Magalhães, Tatiana, Costa, Rogério C., Zara, Fernando J. & Castilho, Antonio L., 2021, Checklist of decapod crustaceans from the coast of the São Paulo state (Brazil) supported by integrative molecular and morphological data: IV. Infraorder Anomura: Superfamilies Chirostyloidea, Galatheoidea, Hippoidea and Paguroidea, Zootaxa 4965 (3), pp. 558-600 : 565

Megalobrachium mortenseni Haig, 1962

( Fig. 2A )

Megalobrachium mortenseni Haig, 1962: 189 , figs. 2–5.

Material examined. Brazil, São Paulo: 1 ♀ ov, CCDB 5664 , Ubatuba, Praia do Itaguá , colls. F. Mantelatto et al., 2.xii.2004 ; 1 ♀ ov, CCDB 6709 , Cananéia, Ilha da Figueira , colls. F. Zara et al., 26.xi.2020 .

Distribution. Western Atlantic— Honduras, Panama, Virgin Islands, Colombia, Venezuela, Brazil (Pará, Piauí, Rio Grande do Norte, Paraíba, Pernambuco, Alagoas, Sergipe, Bahia, Espírito Santo, Rio de Janeiro, São Paulo) ( Werding et al. 2003; Rodríguez et al. 2005; Coelho et al. 2007; Ferreira & Melo 2016; Mendonça et al. 2019).

Remarks. Megalobrachium mortenseni is found in the intertidal region down to depths of 30 m, usually on rocky substrates ( Ferreira & Melo 2016); in sandy bottoms with patches of coral and sea grass beds ( Thalassia Banks ex König, 1805 and Syringodium Kützing, 1860 ) ( Poupin & Lemaitre 2014). The two specimens obtained were collected in colonies of the bryozoan Schizoporella errata ( Waters, 1878) (in Ubatuba) and colonies of leuconoid sponges (in Cananéia). Sequence accession numbers (GenBank): CCDB 6709—16S ( MW753221 ), COI ( MW753222 ).

Figures

FIGURE 2. Family Porcellanidae. A) Megalobrachium mortenseni Haig, 1962 (CCDB 6709). B) Megalobrachium roseum (Rathbun, 1900) (CCDB 6710). C) Minyocerus angustus (Dana, 1852) (CCDB 5515). D) Pachycheles laevidactylus Ortmann, 1892 (CCDB 6708). E) Pachycheles monilifer (Dana, 1852) (CCDB 4901). F) Pachycheles riisei (Stimpson, 1859) (CCDB 4902). G) Petrolisthes armatus (Gibbes, 1850) (CCDB 5066). H) Petrolisthes galathinus (Bosc, 1802) (CCDB 4903). I) Porcellana sayana (Leach, 1820) (CCDB 5279). Animals from Brazil, São Paulo, Cananéia (A, B, D, I), Ubatuba (C, E, F–H). Sex: male (E–H), ovigerous female (A–D; I). Scale bars (mm): A, B, C—3; D—5; E, F—6; G—11; H—12; I—4. Photographs by João A. Pantaleão (A, B, D), R.C. Buranelli (C, E–I).