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Sipuncula
Aspidosiphon (Aspidosiphon) gracilis gracilis (Baird, 1868)
Nomenclature
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Subgenus: Aspidosiphon (Aspidosiphon)Species: Aspidosiphon (Aspidosiphon) gracilis
Subspecies:
Aspidosiphon (Aspidosiphon) gracilis gracilis (Baird, 1868)
SUMMARY
This species has a very weakly developed anal shield, composed of non-contiguous brown papillae surrounded by dark platelets, arranged in irregular longitudinal rows. The introvert arises from the trunk in an unusual angle for Aspidosiphon (60º). The distal hooks are compressed unidentate hooks followed by a proximal area of pyramidal ones. These worms have been collected in intertidal coral rubble in localities around the Pacific and Indian Ocean.