Aspidosiphon tenuis

<p>This species has been found only in the Indo-West Pacific from shallow to shelf water. It has an anal shield with a smooth overall appearance, and compressed bidentate hooks that lack the distinct tongue on the clear streak.</p>

Sumber: Sipuncula

<p>Bay of Batavia, Malaya (Stephen & Edmonds, 1972).</p>

Sumber: Sipuncula

<p>(From Cutler 1994)</p><p>This species was recorded only for the Indo-West Pacific: Andaman Island to Thailand, Vietnam, Formosa, Guam, east to eastern Caroline Island, south through the Salomon Islands to the Great Barrier Reef and Indonesia.</p>

Sumber: Sipuncula

<p>(From Cutler 1994)</p><p>This species lives in shallow water including shelf depth, usually 1-50 m depth.</p>

Sumber: Sipuncula

Description. Trunk 5 – 15 mm long, 2 – 3 mm wide, pale or light brown, semitransparent; introvert 1.5 – 2 X trunk length. Anal shield green or brown-green, smooth and glossy, sometimes saddle-shaped or concave, composed of small dark units, with short marginal grooves; caudal shield brown-green, with radial grooves. Tentacles with white pigments; bidentate hooks 30 μm in height, arranged in rings on the distal introvert; unidentate hooks scattered on the proximal introvert. Pyramidal hooks absent. Longitudinal musculature splits into 23 – 25 anastomozing bands; retractor muscles originate 10 % of trunk length from the caudal shield. Gut with 10 – 15 loops. Nephridia are about 80 – 90 % of trunk length, unattached.