Taxonomy of family Plakinidae (Porifera: Homoscleromorpha) from eastern Pacific coral reefs, through morphology and cox 1 and cob mtDNA data Author Cruz-Barraza, José Antonio Author Vega, Cristina Author Carballo, José Luis text Zoological Journal of the Linnean Society 2014 2014-05-22 171 2 254 276 http://dx.doi.org/10.1111/zoj.12137 journal article 10.1111/zoj.12137 0024-4082 5306486 KEY FOR SPECIES OF HOMOSCLEROMORPHA FROM THE EASTERN PACIFIC REGION 1. Mineral skeleton present.................................................................................................................. 2 1′. Mineral skeleton absent............................................................................................. Oscarella carmela 2. Calthrops absent..............................................................................................................3 ( Plakortis ) 2′. Calthrops present............................................................................................................................5 3. Choanosomal skeleton with structure alveolar reticulation ..................................................................... 4 3′. Choanosomal skeleton without a defined structure..................................... Plakortis clarionensis sp. nov. 4. Diods in a single large size category (12–162.5 μm) ........................................................ Plakortis albicans 4′. Diods in two size categories (126–165 and 27–92 μm)................................................ Plakortis galapagensis 5. Lophose calthrops absent............................................................................ Plakinastrella clippertonensis 5′. Lophose calthrops present together with simple calthrops.........................................................6 ( Plakina ) 6. Only one type of lophose calthrops..................................................................................................... 7 6′. Two type of lophose calthrops (mono- and tetralophose) ....................................................... Plakina bioxea 7. Monolophose calthrops ..................................................................................................................... 8 7′. No monolophose calthrops.................................................................................................................9 8. Monolophose calthrops in a single category..................................................... Plakina muricyae sp. nov. 8′. Monolophose calthrops in two categories ......................................................................... Plakina pacifica 9. Dilophose calthrops........................................................................................................................10 9′. Trilophose or tetralophose calthrops.................................................................................................. 11 10. Smooth surface; dilophose calthrops in a single category.............................. Plakina paradilopha sp. nov. 10′. Microlobate surface; dilophose calthrops in two size categories ...................................... Plakina microlobata 11. Trilophose calthrops.......................................................................................................................12 11′. Tetralophose calthrops, conspicuously spined category of triods................................................ Plakina atka 12. Large encrusting ( 1–1.5 cm ) sponge with a convoluted surface pattern, rare triods (24–36 μm/ray).................. ................................................................................................................................ Plakina fragilis 12′. Small, thin encrusting ( 0.3 mm ) sponge without convoluted surface, triods in two shape categories: (1) smooth and thinner (24–50 μm/ray); (2) thicker, often with one short, spine near the base of each ray (22–38 μm/ray) ................................................................................................................................. Plakina tanaga