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dark cerata
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Noumeaella rehderi
Marcus, 1965
 
Noumeaella rehderi
Maximum size:  11 mm (Kay, 1979).

Identification:  This species has a mottled cream to mottled brown body with slender cerata.(Note 1) The rhinophores have long, closely spaced papillae on their posterior edges.

Natural history:  Noumeaella rehderi is a common (though rarely seen) nocturnal species found in highly protected to exposed rocky habitats from the low intertidal to depths of  6 m (20 ft). However, it's most common at about 1 m (3 ft) at protected sites. It's rare in Halimeda kanaloana beds at depths up to 8 m (26 ft). It lays a white, spiral egg mass that hatches in about three days in the laboratory.

Distribution:  Big Island, Maui and Midway: widely distributed in the Indo-Pacific.

Taxonomic notes:  This species is listed as Noumeaella cf. rehderi in Kay, 1979. It was first recorded in Hawaii from Keauhou Bay, Big Island by Terry Gosliner on Sept. 3, 1973.

Photo:  CP: 4 mm; Hekili Point, Maui; March 23, 2007.

Observations and comments:

Note 1:  We've observed light and dark animals copulating with each other in dishes.
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