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Ceratosoma
(?) sp. #1

 
Ceratosoma(?) sp. #1
Maximum size:  about 40 mm.

Identification:  The body of this nudibranch is high with a narrowly undulating margin. It is bright yellow with irregular, pale blue spots. The mantle edge is white with a peach submarginal band flanked dorsally and ventrally with a reddish-purple line. The foot has a reddish-purple submarginal line and a posterior dorsal “keel." The rhinophores are yellow at the base with purple tips. The gills are unipinnate with long narrow stalks. The pinnae are translucent and the rachis is purple. (Summarized from notes that Scott Johnson took upon examination of the living nudibranch.)

Natural history:  No habitat data exists for the single known animal. It laid a pink egg mass. (Scott Johnson, pers. com.)

Distribution:  French Frigate Shoals.

Taxonomic notes:  First recorded in Hawaii from French Frigate Shoals by Stan Jazwinski in June, 1983.

Photo:  Scott Johnson: about 40 mm: found by Stan Jazwinski; animal transported from French Frigate Shoals and photographed on Oahu; June, 1983.

Observations and comments:

Note 1:  ( )
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