Alpheus nuttingi (Schmitt, 1924)

Examined material. Munipality of Amapá. Maracá-Jipioca Ecological Station, beach from Jacal (02°08’20.24”N, 50°25’10.35”W), 22.xi.1995, H.P. Belo and J.O. Cardoso, 1 male and 1female (IEPA 54) ; idem, stream Herculano (02°06’34.21”N, 50°24”29.78”W), 26.xi.1995, H.P. Belo and J.O. Cardoso, 4 males, 4 females and 4 females with eggs (IEPA 55) ; left margin from Igarapé Herculano, 26.xi.1995, H.P. Belo and J.O. Cardoso, 3 males and 1 female (IEPA 56) ; estuary of Sucuriju River (01°40’04.21”N, 49°55101.45”W), 25.vii.1996, H.P. Belo, J.O. Cardoso and I.M. Vieira, 1 male, 4 females and 4 females with eggs (IEPA 95) ; estuary of Sucuriju River (01°40’17.0”N, 49°55’06.0”W), 25.ix.1996, H.P. Belo, J.O. Cardoso and I.M. Vieira, 14 males, 6 females and 15 females with eggs (IEPA 110) estuary of Sucuriju River, xi.1996, H.P. Belo, J.O. Cardoso and I.M. Vieira, 12 males and 8 females (IEPA 122) ; estuary of Sucuriju River, 03.iv.1997, H.P. Belo, J.O. Cardoso and I.M. Vieira, 10 males, 2 females and 13 females with eggs (IEPA 128) (Figure 2).

Geographic distribution. Western Atlantic, South Florida, Southwest Gulf of Mexico and West Indies to Brazil (States of Ceará to Santa Catarina) (Coelho et al. 2006; Anker 2007; Santos et al. 2012; Soledade & Almeida 2013).

Distribution in Amapá. Oceanic island of Maracá-Jipioca and mouth of the Sucuriju River.

Previous records. present study

Ecological notes. Species found in small tunnels built in more compacted soil mixed with decomposing vegetation in the mangrove, in the intertidal bands. Its presence in the environment is noticed by the emission of clicks caused by its fingers.

Remarks. The morphology of the specimens in this study corresponds to the descriptions by De Grave et al. (2008).