Identifying Sponges

Key to California Porifera (Page 166)

( From page 165 B) Diacts = smooth Subtylotes; NO Tornotes present but Subtylotes may be confused with Tornotes. Subtylote size to 337 μm.
Styles-Acanthostyles 2 size classes.
Arcuate Isochelae: 30 -37-39- 43 μm.
? Lissodendoryx (Lissodendoryx) kyma de Laubenfels,1930 [of Green & Bakus,1994]
Sponge: Encrusting. Surface: undulating.
Color: Alive: Pale drab, brown-orange.
Spicules: Megascleres: (1) Styles: 176 -200-248- 327 um. x 10 -13-14- 16 um. (2) Styles: 362 -409-481- 547 um. x 17 -21-24- 27 um. (3) Subtylotes- Tylotes: 251 -307-327- 370 um. x 5 -7- 9 um. Microscleres: (1) Arcuate Isochelae: 30 -37-39- 47 um.
Skeleton: Ectosome: Dermal membrane with Isochelae, below which are Tornotes more or less tangential to the surface. Choanosome: Dense mesenchyme with ill-defined tracts to surface. These crudely echinated by Styles. The tracts form a loose reticulation.
Distribution: Southern to Northern California.
Depth: Intertidal to deep water.
Note: Bakus, 1966 described this species from Washington and noted the presence of pore seives which do not occur in Lissodendoryx. While this is the most common form seen in California, it may be a different species (Hamigera?) from that described by de Laubenfels. See Page 142A and B.
Acanthostyles 1 size class.
Arcuate Isochelae 23 -30- 36 μm.
Lissodendoryx sp. 3 [of Lee]
Sponge: Massive to 5 mm thick and 5.4 mm long. Consistency: slightly compressible. Surface: superficially smooth to somewhat granular, with thin, transparent ectosomal membrane. Covered with numerous crowded oscula with raised sides, these underlain by parallel subtylotes. Oscula: round to oval, 1 mm across.
Color: not given.
Spicules: Megascleres: (1)Acanthostyles: 248 -311- 354 um. x 10 -11- 13 um. (2)Subtylotes-Tylotes: 227 -271- 296 um. x 5 -6- 9 um. Microscleres: (1)Arcuate Isochelae: 23 -30- 36 um.
Skeleton: Ectosome: Packed with tangential Subtylotes - Tylotes and Arcuate Isochelae near surface. Choanosome: Loose reticulation of Acanthostyles with ill-defined tracts to the surface. Otherwise, confused.
Distribution: Southern California.
Depth: Intertidal to deep water.
Note: This species needs further study. It may belong to Hamigera.
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