Species Overview

Hymedesmia (Hymedesmia) sp. B Klontz, 1989.

SPONGE:

Shape: Thinly encrusting
Size_thickness: to 2 mm
Color_alive: Bright red

HABITAT:

Benthic Region: Marine: Intertidal
Distribution: Southern California

Ectosome:

Architecture: Tightly packed Subtylotes perpendicular to and often protruding through the dermal membrane.

Choanosome:

Architecture: Acanthostyles with heads embedded in basal spongin and forming echinating branching tracts which rise to the surface. Isochelae not abundant.

Skeleton:

Composition: Silicate
Architecture: Acanthostyles with heads embedded in basal spongin and forming echinating branching tracts which rise to the surface. Isochelae not abundant.

Megasclere:

Shape: Acanthostyles
Length: 112 -206- 360 µ
Width: 8.0 -8.9- 12 µ

Megasclere:

Shape: Subtylotes - Tylotes
Length: 149 -206- 239 µ
Width: 4.0 -4.8- 6.0 µ

Microsclere:

Shape: Arcuate Isochelae
Length: 18 -- 31 µ