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Sclerodoris
sp #1

 
Sclerodoris sp #1
Maximum size:  about 100 mm (Scott Johnson).

Identification:  This is a firm, rough-textured, red species. The notum is variably marked with scabrous white patches. (Note 1) There is a single mid-dorsal "crater" that may contain patches of dark pigment. Lateral to the midline on each side are three smaller depressions that may also contain darker pigment in some animals.

Natural history:  Sclerodoris sp #1 is a moderately rare species found in tide pools and subtidally to depths of  65 m (213 ft). It occurs at moderately protected to highly exposed rocky sites and has been found resting on a red sponge that matches its color. It lays a bright orange egg mass that hatches in about five days in the laboratory.

Distribution:  Maui and Oahu:  possibly more widely distributed.

Taxonomic notes:  The description of the second Sclerodoris sp. in Kay, 1979 appears to refer to this species (although the photo is of Aldisa pikokai). It is also listed as Halgerda rubra in Kay & Young, 1969. It is similar to the Indo-Pacific Sclerodoris tuberculata and is listed as Sclerodoris sp. 1 in Gosliner, et. al., 2008. It may have been first reported in Hawaii off Ewa Beach, Oahu in Sept. 1965 (Kay & Young, 1969). However, it seems possible that Doris excavata Pease, 1860 and Doris reticulata Pease, 1860 were this species rather than synonyms, respectively, of Trippa osseosa and Chromodoris sp. #1 as suggested in Kay, 1979. If so, it was first reported from Hawaii in Pease, 1860.

Photo:  CP: found by student; Napili Bay, Maui; March 30, 2003.

Observations and comments:

Note 1:  Perhaps, the amount of white increases with age?
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