Hendrix & Gore 1973 : 415 Decapod crustaceans from the state of Ceará, northeastern Brazil: an updated checklist of marine and estuarine species, with 23 new records Pachelle, Paulo P. G. Anker, Arthur Mendes, Cecili B. Bezerra, Luis E. A. Zootaxa 2016 4131 1 1 63 84W9J Hendrix & Gore, 1973 Hendrix & Gore 1973 [151,641,152,178] Malacostraca Alpheidae Alpheus Animalia Decapoda 9 10 Arthropoda species thomasi     Alpheus thomasi  Hendrix & Gore 1973: 415, figs. 1–3.   Material examined. Brazil, Ceará: 1 female(missing majorcheliped), LIMCE-UFC 296, Trairí, Praia de Mundaú, coll. PROBIO team, 14.iii.2003; 1 male, LIMCE-UFC 298, same collection data.  Additional material. Brazil, Rio Grande do Norte: 1 male, OUMNH.ZC.2012-07-0032, Areia Branca, Praia de Baixa Grande, rocky shore close to estuary, coll. P.P.G. Pachelle, 29.ix.2011[fcn 11-142]; 1 ov. female, RMNH D 54842, same collection data [fcn 11-141].   Distribution. Western Atlantic: USA(Florida), Cuba, Gulf of Mexico, Panamaand Brazil(Ceará, Rio Grande do Norte, Paraíba, Espírito Santo, Rio de Janeiro, São Paulo, Paraná) ( Christoffersen 1998; Soledade & Almeida 2013; present study).   Remarks. The present material is the first record of  Alpheus thomasifor the Brazilian states of Ceará and Rio Grande do Norte. This colourful snapping shrimp, easily identifiable in the field by its diagnostic colour pattern ( Fig. 4, see also Hendrix & Gore 1973; Anker et al.2008), appears to be relatively widespread in Brazil, although localised and not very common.