Identifying Sponges

Key to California Porifera (Page 121)

( From page 120 B) Megascleres WITHOUT Oxeas.
[A]
Megascleres include Styles-Subtylostyles and Tylotes-Subtylotes.
cc121A.jpg
Lissodendoryx (Lissodendoryx) topsenti (de Laubenfels, 1930)
Sponge: Thickly encrusting to massive up to 7.5 x 5.0 x 5.0 cm. Surface: superficially smooth.
Color: Alive: Salmon-pink, dull orange-red, dull orange-brown, burnt sienna or pale terra cotta.
Spicules: Megascleres: (1) Styles - Subtylostyles: 222 -293-320- 398 um. x 6.5 - 7.0 um. (2) Tylotes - Subtylotes (sometimes gently sinuous): 195 -247-274- 333 um. x 4.5 - 7.0 um. May have immature Styles that look like rhaphides.
Skeleton: Ectosome: A thin dermal membrane with tangentially arranged Tylotes. The dermis is underlain by upright or random Tylotes-Subtylotes which also occur interstitially in the choanosome. Choanosome with multispicular, sinuous tracts of Subtylostyles to Styles.
Distribution: Southern and Central California.
Depth: Intertidal to subtidal.
Note: The Rhaphides reported by de Laubenfels,1932, are immature styles. This species (formerly Tedania topsenti) was placed in the genus Kirkpatrickia by Bakus in 1966. Its placement in Kirkpatrickia (Bakus, 1966) is in error. The species is now Lissodendoryx (Lissodendoryx) topsenti. See pg. 144A for de Laubenfels' description.
[B]
Megascleres include Tylostyles and Tylostrongyles (blunt ended Tylostyles).
Suberites suberea (Johnson) latus Lambe, 1893 (see de Laubenfels, 1932)
Sponge: Massive, semihemispherical. Consistency: firm. Surface: superficially smooth. Oscula: pores and oscula not evident or oscula few, 2 - 4 mm in diameter.
Color: Alive: White, grey, vermilion with bright orange most common. Preserved: Pale drab.
Spicules: Megascleres: (1)Tylostyles (may be absent): 90 -150 um. (2)Tylostyles: 250 - 590 um. x 5.0 - 12 um. (3)Tylostrongyles (blunt-ended Tylostyles): 135 - 350 um. Tylostyles are large-headed-often with the double-headed modification. Microscleres: (1)Microstrongyles (may be absent): 20 - 50 um.
Skeleton: Ectosome: smaller spicules packed with points outward. Choanosome fleshy with spicules in confusion.
Distribution: Southern and Central California.
Depth: Intertidal to subtidal.
Note: This species as well as the entire genus Suberites in California, is in need of a thorough review. This possibly represents a complex of species.
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