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Siphopteron flavum
(Tokioka & Baba, 1964)
 
Siphopteron flavum
Maximum size:  5 mm.

Identification:  This is a bright yellow species that lacks an elongate flagellum. The siphon is black and there is an irregular red-brown to black patch on the dorsum.

Natural history:  Siphopteron flavum is a moderately common diurnal species found in rocky habitats at depths of 1-10 m (3-33 ft). It occurs at moderately exposed to highly exposed sites. A 5 mm animal laid a flattened "half-moon shaped" egg mass that was 2 mm in greatest diameter. It was pale yellow in color and hatched in about eight days in the laboratory.

Distribution:  Big Island, Maui, Kahoolawe, Oahu, Kauai, French Frigate Shoals, Midway and Kure: also known from Guam & Japan.

Taxonomic notes:  This species is listed as Gastropteron flavum in Bertsch and Johnson, 1981. It was first recorded in Hawaii from Pupukea, Oahu by Judith Bertsch and Larry Targett on June 4, 1978.

Photo:  CP: 5 mm: Ke'e Beach, Kauai; May 8, 2014.

Observations and comments:

Note 1:  ( )
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