Synalpheus antillensis Coutière, 1909

Paixão, Pedro Henrique, Terossi, Mariana, Pasinatto, Karmine, Bochini, Gabriel Lucas & Almeida, Alexandre Oliveira, 2025, Shrimps of the genus Synalpheus Spence Bate, 1888 (Decapoda: Alpheidae) from Northeast Brazil region, Zootaxa 5666 (1), pp. 1-52 : 8

Synalpheus antillensis Coutière, 1909

Material examined: Maranhão — Turiaçu: 1 M, Almirante Saldanha Expedition, St. 1751, 06.xi.1967, 00°37.0′S 44°40.0′W, 44.0 m depth, MOUFPE 8795 ; Pernambuco — Goiana : 1 M, 1 OV , Praia de Pontas de Pedra , 07°37′00′′S 34°48′51′′W, 1.0 m depth, in the sponge Haliclona implexiformis Hechtel, 1965 , MOUFPE 21600 ; Sergipe —2 M, Plataforma Pcm 11 Pós. Face Externa Pé: Fora Superfície Externa, MOUFPE 15791 ; Bahia —1 M, Nordeste Expedition III, St. 181, MOUFPE 13050 .

Description: Coutière (1909), as Synalpheus minus antillensis , and Anker et al. (2012).

Distribution: Gulf of Mexico (off Texas), Caribbean Sea (from Yucatan Peninsula to Venezuela), and Brazil (Abrolhos, Rocas Atoll, Trindade Island, Maranhão and from Ceará to São Paulo) ( Anker et al. 2012, 2016; Soledade et al. 2015; this study).

Ecology: In coral reefs, coral rubble, coralline algae, and sponges (e.g., Ircinia sp. ); mostly in heterosexual pairs; intertidal to 42 m ( Anker et al. 2012, 2016). The material from Goiana, Pernambuco (MOUFPE 21600), was found in heterosexual pairs inhabiting coral rubble and sponges ( H. implexiformis ).

Remarks: This species is recorded in association with the sponge H. implexiformis for the first time.