Identifying Sponges

Key to California Porifera (Page 145)

( From page 143 B) NO Rhaphides or Styles looking like rhaphides. Onychaetes present.
[A] GO TO PAGE 146
Diacts are Strongyles to Tylotes (some may look like Styles with microspined heads).
Diacts are Tornotes.
Heads not microspined.
Tedania (Trachytedania) gurjanovae Koltun, 1958
Sponge: Encrusting to cushion shaped. Consistency: fragile. Surface: smooth to lumpy.
Color: Alive: Tan, grey, light brown, green-yellow.
Spicules: Megascleres: (1)Tornotes: 171 -193-215- 241 um. x 4 -5- 8 um. (2)Styles: 218 -265-288- 345 um. x 8 -13- 14 um. Microscleres: (1)Onychaetes (one end blunt; the other pointed): 51 -70-72- 99 um. (2)Onychaetes: 159 -191-228- 260 um.
Skeleton: Ectosome: Thin dermis with Tornotes. Choanosome: with tracts of Styles and bundles of Rhaphides and Onychaetes.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
START 001 002