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Facelina
sp. #4
 
Facelina sp. #4
Maximum size:  14 mm.

Identification:  Facelina sp. #4 is a distinctive aeolid with widely-spaced clusters of cerata. The cerata have orange tips and yellow-white subapical bands. The bases are translucent and variable in color, presumably due to the contents of the digestive gland. There are prominent cnidosacs in their tips. (see photo) The cephalic tentacles have white tips and the orange rhinophores have a white subapical band. The sides of the body are marked with white and orange "lozenges" between the clusters of cerata.

Natural history:  This appears to be a rare species with the few known animals found under ledges at 5-14 m (16-52 ft) in exposed to highly exposed rocky areas (although it may be more common on Oahu).

Distribution:  Big Island, Oahu, Kauai and Niihau.

Taxonomic notes:  This species is illustrated in Bertsch and Johnson, 1981 as an unidentified aeolid (p. 103, top photo). It was first recorded in Hawaii at Pupukea, Oahu by Scott Johnson on July 9, 1979.

Photo:  Scott Johnson: 14 mm: Pupukea, Oahu; July 9, 1979.

Observations and comments:

Note 1:  ( )
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