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Phyllidiopsis fissuratus
Brunckhorst, 1993
 
Phyllidiopsis fissuratus
Maximum size:  60 mm.

Identification:  This is a large, elongate species with many tall, pink compound tubercles with irregular upper surfaces. The black dorsum appears as deep fissures meandering among the tubercles. Black lines extend onto the tops of the tubercles and the mantle edge is pink interrupted by black rays. The rhinophores are mostly black with some pink on the bottom anterior edge. The fused oral tentacles are pink. It can be distinguished from the much more common Phyllidiella pustulosa by its black marginal rays, pink-based rhinophores and fused oral tentacles.

Natural history:  Phyllidiopsis fissuratus is a rare species found in the open in moderately protected to exposed rocky locations from 10-26 m (33-85 ft).

Distribution:  Maui, Molokai, Oahu and Niihau: widely distributed in the western & central Pacific.

Taxonomic notes:  It was first recorded in Hawaii at Makua, Oahu by Scott Johnson on Oct. 28, 1985. The name refers to the deeply fissured appearance of the dorsal surface.

Photo:  John Hoover: 48 mm: Pupukea, Oahu; July, 2000.

Observations and comments:

Note 1:  ( )
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