Sely-dividing flabellids consist of 5 genera (Truncatoflabellum, Placotrochides, Blastotrochus, Placotrochus, and

Distribution. amongst the roughly 240 Er. Gonostylus is typically quadrangular in dorsal or ventral views, with living scleractinian genera, and thus a crucial to the species and guide for the pertinent literature was believed appropriate. Cairns / ZooKeys 562: 1?eight (2016)Introduction Confronted having a big collection of Truncatoflabellum in the course of a recent (2014) trip to Taiwan, it became apparent that the literature on the species of this genus was scattered and not effectively organized. Despite the fact that there had been some keys to the species, they were regional in nature, i.e., Philippine region (Cairns 1989b), southwest Indian Ocean (Cairns and Keller 1993), North Pacific (Cairns 1994), and Western Australia (Cairns 1998). No unified key or comparative table existed to update that of Cairns (1989b). Truncatoflabellum is the seventh biggest Holocene genus amongst the about 240 living scleractinian genera, and therefore a essential for the species and guide for the pertinent literature was thought appropriate. (By far the most specious Holocene scleractinian genera are (Hoeksema and Cairns 2015): Acropora ?about 120 living species, Caryophyllia ?75 species, Balanophyllia ?59 species, Montipora ?about 56 species, Flabellum ?42 species, Porites ?about 41 species, and after that Truncatoflabellum, with 32 living species).Sely-dividing flabellids consist of five genera (Truncatoflabellum, Placotrochides, Blastotrochus, Placotrochus, and Falcatoflabellum) and 45 species. A dichotomous important is offered for these five genera too because the species with the genus Truncatoflabellum and Placotrochides, the other 3 genera being monotypic. A tabular important can also be offered for the 38 species of Truncatoflabellum. Two new combinations are recommended (T. gambierense and T. sphenodeum) and two new species are described (T. duncani and T. mozambiquensis). All but one species are illustrated and accompanied by their known distribution plus a guide for the pertinent literature for the species. New records of 19 from the 45 species are listed. The transversely-dividing flabellids variety in the Middle Eocene for the Current at depths of 2?010 m, and constitute 60 in the 65 recognized extant species of transversely-dividing Scleractinia. Keywords and phrases Flabellidae, Truncatoflabellum, Placotrochides, Blastotrochus, Placotrochus, Falcatoflabellum, transversely dividing, crucial, asexual reproductionCopyright Stephen D. Cairns. This really is an open access article distributed under the terms of your Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, supplied the original author and source are credited.Stephen D. Cairns / ZooKeys 562: 1?eight (2016)Introduction Confronted having a substantial collection of Truncatoflabellum during a current (2014) trip to Taiwan, it became apparent that the literature around the species of this genus was scattered and not nicely organized. Even though there have been some keys to the species, they had been regional in nature, i.e., Philippine area (Cairns 1989b), southwest Indian Ocean (Cairns and Keller 1993), North Pacific (Cairns 1994), and Western Australia (Cairns 1998). No unified essential or comparative table existed to update that of Cairns (1989b). Truncatoflabellum will be the seventh biggest Holocene genus among the approximately 240 living scleractinian genera, and hence a essential for the species and guide towards the pertinent literature was thought suitable. (The most specious Holocene scleractinian genera are (Hoeksema and Cairns 2015): Acropora ?about 120 living species, Caryophyllia ?75 species, Balanophyllia ?59 species, Montipora ?about 56 species, Flabellum ?42 species, Porites ?about 41 species, and after that Truncatoflabellum, with 32 living species). The 4 other truncate flabellid genera are included for completeness: Blastotrochus, Placotrochides, Placotrochus, and Falcatoflabellum. In the 120 living azooxanthellate genera (Roberts et al.