Homoscleromorpha FROM THE
Creators: name: Cruz-Barraza, José Antonio
name: Vega, Cristina
name: Carballo, José Luis
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Porifera
Homoscleromorpha

description: 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
description: Published as part of Cruz-Barraza, José Antonio, Vega, Cristina & Carballo, José Luis, 2014, Taxonomy of family Plakinidae (Porifera: Homoscleromorpha) from eastern Pacific coral reefs, through morphology and cox 1 and cob mtDNA data, pp. 254-276 in Zoological Journal of the Linnean Society 171 (2) on page 271, DOI: 10.1111/zoj.12137, http://zenodo.org/record/5306486