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Hypselodoris maridadilus
Rudman, 1977
 
Hypselodoris maridadilus
Maximum size:  34 mm (Bertsch and Johnson, 1981).

Identification:  This species has a bright-white body with five longitudinal purple-pink lines on the notum and a purple-pink line on the margin of the mantle. The rhinophores are orange with tiny white tips and the gills are orange with white on the upper edges.

Natural history:  Hypselodoris maridadilus is a moderately rare species in the main islands but is commonly seen at Midway Atoll. It is found in moderately protected locations on rocky bottoms and patch reefs at depths of < 1 to 20 m (< 3 to 65 ft). It lays an bright orange egg mass.

Distribution:  Maui, Oahu, Lisianski and Midway: widely distributed in the Indo-Pacific.

Taxonomic notes:  Some authors consider the Hawaiian population to be Hypselodoris whitei (Adams & Reeve, 1850) rather than H. maridadilus (restricting the latter to the Indian Ocean). See the See Slug Forum for further discussion. Described from East Africa, its scientific name comes from the Swahili word "maridadi" which means "beautiful." It's referred to as the "magenta-striped nudibranch" in Hoover, 1998 & 2006. It was probably first reported from Hawaii in Eydoux and Souleyet, 1852 (as Doris lineata).

Photo:  PF: 29 mm: Napili Bay, Maui; Aug. 19, 1994.

Observations and comments:

Note 1:  ( )
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