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FIGURE 5 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 5. (A–D) Leptalpheus aff. forceps Williams, 1965, young male (CL=2.7 mm) (MZUESC 1240), Patipe River, Canavieiras, state of Bahia, Brazil. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view; (C) left major chela, ventral view; (D) left major chela, lateral view. (E–G) Leptalpheus forceps Williams, 1965, male (E, F) and ovigerous female (G) (CL not measured) (MNHN-Na-15682), Fort Pierce, Florida, USA. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view; (C) major chela, lateral view. Scale bars: A, B, E, F = 1 mm; C, D = 0.5 mm.

FIGURE 2 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 2. Alpheid shrimps from southern Bahia, Brazil. (A) Alpheus bouvieri A. Milne-Edwards, 1878, male from Cachoeira River, Maramata Beach, Ilhéus. (B) Alpheus cristulifrons Rathbun, 1900, ovigerous female from Tassimirim Beach, Cairú. (C) Alpheus formosus Gibbes, 1850, male from Tassimirim Beach, Cairú. (D) Alpheus cf. paracrinitus Miers, 1881, male from Taipus de Fora Beach, Maraú. (E) Alpheus cf. rostratus W. Kim & Abele, 1988, ovigerous female from Taipus de Fora Beach, Maraú. (F) Salmoneus carvachoi Anker, 2007, two ovigerous individuals from Maraú River, Maraú.

FIGURE 3 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 3. Automate cf. evermanni Rathbun, 1901, female (CL=3.3 mm) (MZUESC 1063), Cumuruxatiba Beach, Prado, state of Bahia, Brazil. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view. Scale bars: A = 0.5 mm; B = 1 mm.

FIGURE 1 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 1. Location of the study area in southern Bahia, eastern Brazil. Horizontal bars indicate the northern (Cairú) and southern (Mucuri) limits. (CB) Camamu Bay, (RCB) Royal Charlotte Bank, (TSB) Todos os Santos Bay, (CS) outer border of the continental shelf. The main rivers are underlined. Scale bar: 100 km.

FIGURE 6 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 6. Synalpheus ul (Ríos & Duffy, 2007), male (CL=4.7 mm) (MZUESC 709), Camamu Bay, state of Bahia, Brazil. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view; (C) abdomen, lateral view; (D) telson, dorsal view; (E) left exopodite of the uropod, dorsal view; (F) right exopodite of the uropod, dorsal view; (G) left major chela, lateral view. Scale bars: A–C = 1 mm; D, E = 0.5 mm; F = 2 mm.

FIGURE 7 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 7. Synalpheus ul (Ríos & Duffy, 2007), male (CL=4.7 mm) (MZUESC 709), Camamu Bay, state of Bahia, Brazil. (A) left major chela, distal portion, lateral view; (B) left major chela, distal portion, mesial view; (C) right minor chela, lateral view; (D) right minor chela, distal portion, mesial view; (E) right minor chela, dorsal view; (F) pollex of left major chela, ventral view; (G) right basicerite, dorsal view. Scale bars: A– C, E = 1 mm; D, F, G = 0.5 mm.

FIGURE 4 in Shallow-water caridean shrimps from southern Bahia, Brazil, including the first record of Synalpheus ul (Ríos & Duffy, 2007) (Alpheidae) in the southwestern Atlantic Ocean

FIGURE 4. Leptalpheus axianassae Dworschak & Coelho, 1999, male (CL=5.9 mm) (MZUESC 1214), Contas River, Itacaré, state of Bahia, Brazil. (A) head and cephalic appendages, dorsal view; (B) head and cephalic appendages, lateral view; (C) right major chela, ventrolateral view; (D) right major chela, distal portion, mesial view; (E) left minor chela, dorsal view. Scale bars: A, B, E, F = 1 mm; C, D = 0.5 mm.

FIGURE 9 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 9. Synalpheus sp. gambarelloides group, ovigerous female (cl 5.0 mm) from off Fortaleza, Brazil [MZUSP 31502]: A—frontal region, dorsal; B—anterior margin of carapace, lateral; C—major (left) chela, mesial; D—same, distal palm and fingers chela, lateral; E—minor (right) cheliped, lateral; F—second pereiopod, lateral; G—third pereiopod, lateral; H—same, distal propodus and dactylus, lateral.

FIGURE 6 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 6. Synalpheus tenuispina Coutière, 1909, male (cl 7.1 mm) from São Sebastião, Brazil [MZUSP 31503]: A—major (left) cheliped, lateral; B—same, chela, mesial; C—minor (right) cheliped, lateral; D—same, carpus and chela, mesial.

FIGURE 3 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 3. Synalpheus maxillispinus sp. nov., A, B, holotype, female (cl 3.0 mm) from Abrolhos Bank, Brazil [MZUSP 30093]; C–G, paratype, male (cl 3.5 mm) from Rio Doce, Espírito Santo, Brazil [MZUSP 30095]: A—major (right) cheliped, lateral; B—same, chela, mesial; C—major (left) chela, lateral; D—same, mesial; E—same, distal palm and fingers, lateral; F—minor (right) cheliped, lateral; G—same, carpus and chela, mesial.

FIGURE 8 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 8. Synalpheus yano (Ríos & Duffy, 2007): A—ovigerous female (cl 4.3 mm) from Ceará, Brazil [MZUSP 31142], lateral view; B—ovigerous female (cl ~4.5 mm) from St. Petersburg area, western Florida, USA [FLMNH UF 31631]: dorsolateral view. Photographs courtesy of F. Monteiro (A) and J. Slapcinsky (B).

FIGURE 2 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 2. Synalpheus maxillispinus sp. nov., A–K, holotype, female (cl 3.0 mm) from Abrolhos Bank, Brazil [MZUSP 30093]; L, M, paratype, male (cl 3.5 mm) from Rio Doce, Espírito Santo, Brazil [MZUSP 30095]: A—frontal region, dorsal; B—same, lateral; C—abdomen, lateral; D—telson, dorsal; E—third maxilliped, lateral; F—same, carpus and ultimate article, mesial; G—second pereiopod, lateral; H—third pereiopod, lateral; I—same, distal propodus and dactylus, lateral; J—fifth pereiopod, lateral; K—uropod, dorsal; L—frontal region, dorsal; M—uropod, dorsal.

FIGURE 1 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 1. Synalpheus androsi Coutière, 1909, male (cl 3.4 mm) from off Espírito Santo, Brazil [MZUSP 31138]: A—frontal region, dorsal; B—same, lateral; C—abdomen, lateral; D—telson, dorsal; E—third maxilliped, lateral; F—major (right) cheliped, lateral; G—same, chela, mesial; H—minor (left) cheliped, lateral; I—same, carpus and chela, mesial; J—second pereiopod, lateral; K—third pereiopod, lateral; L—same, distal merus, carpus and proximal propodus, ventrolateral; M—same, distal propodus and dactylus, lateral; N—uropod, dorsal.

FIGURE 5 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 5. Synalpheus tenuispina Coutière, 1909, male (cl 7.1 mm) from São Sebastião, Brazil [MZUSP 31503]: A—frontal region, dorsal; B—same, lateral; C—abdomen, lateral; D—telson, dorsal; E—third maxilliped, lateral; F—same, tip of ultimate article, mesial; G—second pereiopod, lateral; H—third pereiopod, lateral; I—same, distal propodus and dactylus, lateral; J—fifth pereiopod, lateral; K—same, propodus and dactylus; L—uropod, dorsal.

FIGURE 7 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 7. Synalpheus yano (Ríos & Duffy, 2007), male (cl 3.9 mm) from off Fortaleza, Brazil [MZUSP 31141]: A—frontal region, dorsal; B—abdomen, lateral; C—telson, dorsal; D—major (left) cheliped, lateral; E—same, chela, mesial; F—minor (right) cheliped, lateral; G—same, carpus and chela, mesial; H—second pereiopod, lateral; I—third pereiopod, lateral; J—same, distal propodus and dactylus, lateral; K—uropod, dorsal.

FIGURE 4 in Taxonomic notes on some Brazilian species of Synalpheus Spence Bate, 1888, with new records and description of a new species (Decapoda, Alpheidae)

FIGURE 4. Synalpheus cf. ruetzleri Macdonald & Duffy, 2006, male (cl 4.1 mm) from off Fortaleza, Brazil [MZUSP 31501]: A—frontal region, dorsal; B—abdomen, lateral; C—telson, dorsal; D—third maxilliped, lateral; E—major (right) cheliped, lateral; F—same, chela, mesial; G—minor (left) cheliped, lateral; H—same, carpus and chela, mesial; I—second pereiopod, lateral; J—third pereiopod, lateral; K—same, distal propodus and dactylus, lateral; L—left uropod, dorsal; M—right uropod, distolateral margin of exopod, dorsal.

FIGURE 18 in Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic

FIGURE 18. Zoogeographical components of the alpheid fauna of the oceanic islands in the tropical southern Atlantic, indicated by percentages: ADR, Atol das Rocas; ASC, Ascension Island; CVA, Cape Verde Archipelago; FDN, Fernando de Noronha Archipelago; GOG, Gulf of Guinea: São Tomé, Príncipe and Annobón Islands; SPP, São Pedro & São Paulo Archipelago; STH, Saint Helena Island. TMV, Trindade & Martin Vaz Archipelago. Other abbreviations: AA, amphi-Atlantic component; EA, eastern Atlantic component; En, endemic component; WA, western Atlantic component.

FIGURE 17 in Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic

FIGURE 17. Patterns of the alpheid species richness in the tropical southern Atlantic Ocean. Circle diameters are sized in proportion to the number of species in each area. Numbers inside brackets refer to alpheid species richness: ADR (25), Atol das Rocas; ASC (14), Ascension Island; CBR (69), continental coast and shelf of Brazil from Amapá to Rio Grande do Sul (including Abrolhos Archipelago); CUA (4), continental coast and shelf of Uruguay and Argentina (including Falkland/ Malvinas Islands); CVA (22), Cape Verde Archipelago; FDN (23), Fernando de Noronha Archipelago; FMC (41), North Carolina to Florida and Texas, Gulf of Mexico, Caribbean Sea, Bahamas, and Bermuda (indicating total number of species shared with South Atlantic); GOG (30), Gulf of Guinea: São Tomé, Príncipe and Annobón Islands; NCS (10), North Chain Seamounts; SPP (1), São Pedro & São Paulo Archipelago; STH (6), Saint Helena Island; TMV (21), Trindade & Martin Vaz Archipelago; VTS (6), Vitória-Trindade Seamounts Chain; WAC (27), West African continental coast and shelf from Senegal to Namibia. Abbreviations for oceanic currents: AEU, Atlantic Equatorial Undercurrent; BC, Brazil Current; CC, Canary Current; GC, Guinea Current; NEC, North Equatorial Current; NECC, North Equatorial Countercurrent; SEC, South Equatorial Current; SECC, South Equatorial Countercurrent. Circles with the same colour and diameter indicate similar species richness.

FIGURE 15 in Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic

FIGURE 15. Synalpheus trinitatis sp. nov., paratype, male from Trindade Island, Enseada dos Portugueses (MZUSP 33316): A—right (major) chela, lateral view; B—same, detail of distodorsal protuberance; C—left uropod, dorsal view.

FIGURE 16 in Alpheid shrimps (Decapoda: Caridea) of the Trindade & Martin Vaz Archipelago, off Brazil, with new records, description of a new species of Synalpheus and remarks on zoogeographical patterns in the oceanic islands of the tropical southern Atlantic

FIGURE 16. Synalpheus brooksi Coutière, 1909, male-looking ovigerous specimen from Ceará, Brazil (MZUSP 31145): A— frontal region, dorsal view; B—pleon, lateral view; C—telson, dorsal view; D—right (major) chela, mesial view; E—left uropod, dorsal view, F —right uropod, dorsal view.