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Atagema echinata
(Pease, 1860)
 
Atagema echinata
Maximum size:  24 mm (Kay, 1979).

Identification:  This is a cream species with elaborate papillae surrounding small depressions. The depressions are filled with dusky brown pigment and the papillae may be frosted with white. The rhinophore sheaths are high while the rhinophores are pointed and slender with many lamellae. They are usually tipped with white.

Natural history:  Kay, 1979 refers to Atagema echinata as a common species on shallow reef platforms and in back reef habitats on Oahu and Kauai. However, we've never found it on Maui. Scott Johnson found it only twice on Oahu and the Big Island at exposed sites.

Distribution:  Big Island, Oahu and Kauai: widely distributed in the western & central Pacific.

Taxonomic notes:  This is the species that Kay, 1979 as well as Kay & Young, 1969 list as Trippa echinata. It was first reported from Hawaii in Pease, 1860 (as Doris echinata).

Photo:  Scott Johnson: about 21 mm: Puako, Big Island; Sept. 27, 1980.

Observations and comments:

Note 1:  ( )
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