Aspidochirotida (Echinodermata: Holothuroidea) from the northeast coast of Brazil Author Prata, Jéssica Author Manso, Cynthia L. C. Author Christoffersen, Martin L. text Zootaxa 2014 2014-11-28 3889 1 127 150 journal article 10.11646/zootaxa.3889.1.8 ae89d0e0-f6d6-43ed-9949-5fdfb276d457 1175-5326 229183 F31AA0BE-440A-40FB-8EDC-249807156334 Key for the species identification of the Order Aspidochirotida known from northeast Brazil : 1 Gonads in two tufts, one on each side of dorsal mesentery. Tables and C-shaped ossicles present (Family Stichopodidae )...................................................................................... Isostichopus badionotus - Gonads in a single tuft, on left side of dorsal mesentery. Tables present, usually accompanied by buttons, plates or rods, but there are no C-shaped ossicles (Family Holothuriidae )........................................................ 2 2 Ossicles of the body wall are rosette-like elements........................................... Actinopyga agassizii - Ossicles of the body wall of different forms than rosettes (Genus Holothuria )..................................... 3 3 Tables with disc margin knobbed............................................. Holothuria ( Cystipus ) pseudofossor - Tables with disc margin smooth or spinous................................................................. 4 4 Tables with reduced disc............................................... Holothuria ( Semperothuria ) surinamensis - Tables with well-developed disc.......................................................................... 5 5 Tables accompanied by irregular buttons (indented or knobbed) or regular buttons (knobbed)......................... 6 - Tables accompanied by smooth buttons or delicate perforated plates............................................. 8 6 Buttons irregular or complex, not knobbed on surface......................................................... 7 - Buttons regular, knobbed on surface........................................... Holothuria ( Holothuria ) dakarensis 7 Buttons complex, similar to fenestrated plates, with parallel perforations. Tables large in tube feet............................................................................................... Holothuria ( Theelothuria ) princeps - Buttons irregular, with perforations usually alternating. Large tables absent in tube feet.... Holothuria ( Platyperona ) parvula 8 Tables small, accompanied by smooth plates, with 2–4 central perforations and a few smaller perforations surrounding these, without buttons............................................................... Holothuria ( Halodeima ) grisea - Tables with semicircular discs with 4–8 marginal perforations and a small spire, small and smooth buttons........................................................................................ Holothuria ( Thymiosycia ) arenicola