Revision of Bairdiella (Sciaenidae: Perciformes) from the western South Atlantic, with insights into its diversity and biogeography Author Marceniuk, Alexandre Pires Author Molina, Eduardo Garcia Author Caires, Rodrigo Antunes Author Rotundo, Matheus Marcos Author Wosiacki, Wolmar Benjamin Author Oliveira, Claudio text Neotropical Ichthyology 2019 2019-04-25 17 1 1 18 journal article 10.1590/1982-0224-20180024 b6b63f47-67b6-40c8-b6e9-1b7e7b0d698d 1982-0224 3649462 FAEBE302-376D-46C3-BB3C-6DA3A3530F53 Key to the species of Bairdiella 1a. Dorsal-fin rays 25-29; gill rakers on first branchial arch 25-27; dark spot at base of pectoral fins............ B. icistia (eastern Pacific from Gulf of California to Guatemala ) 1b. Dorsal-fin rays 19-24, gill rakers on first branchial arch 22-24; without dark spot at base of pectoral fins............ 2 2a. Six pores on chin; anal-fin rays 8-10, more commonly 9; second anal fin spine thin, shorter than first anal-fin ray.. ...................................................................... B. chrysoura (western Atlantic, from Cape Cod to western Gulf of Mexico ) 2b. Five pores on chin; anal-fin rays 8-9, more commonly 8; second anal fin spine robust, as long as first anal-fin ray.... 3 3a. Body silvery without stripes or dark spot; head profile slightly convex; 55 or more scales along lateral line up to caudal fin base ................................................. B. ensifera (eastern Pacific, from Southern Mexico to Peru ) 3b. Body with wavy stripes or dots; head profile straight or slightly concave; 46-53 scales along lateral line up to caudal fin base...................................................................... 4 4b. Eyes large, orbital diameter larger than 8% SL .............. ............................................................... B. goeldi sp. nov. (western Atlantic, Brazilian coast) 4a. Eye small, orbital diameter less than 8% SL................. 5 5a. 46-49 scales with pores along lateral line up to caudal fin base ........................................................... B. armata (eastern Pacific, from Gulf of California to Colombia ) 5b. 50-53 (rarely 49) scales with pores along lateral line up to caudal fin base ............................................................ 6 6a. Dorsal fin relatively high and head relatively small, hei- ght of dorsal fin 1.2-1.5 times the height of the head; hei- ght of dorsal fin 1.2-1.5 times the width of the head........ ................................................................... B. veraecrucis (western Atlantic, Gulf of Mexico ) 6b. Dorsal fin relatively low and head relatively large, height of dorsal fin 1.7-2.7 times height of the head; height of dor- sal fin 1.6-2.5 times the width of the head ......... B. ronchus (western Atlantic, Caribbean Sea)