Gymnodoris sp. #7
|Maximum size: 15 mm.
varies from cream to pale pink with pale orange spots. The
cephalic hood is narrow and triangular. The gills are simple, form an
incomplete circle and rarely have orange on the rachis. The rhinophores
are sometimes tipped with small, pale-orange spots. The smaller and
lighter orange spots distinguish
it from Gymnodoris alba. (Note 1) (Note 2)
Gymnodoris sp. #7 is
a moderately common species found in protected to exposed
rocky habitats from < 1 to 6 m (< 3 to 20 ft). Rarely, it can be
found in Halimeda kanaloana
beds to 12 m (39 ft). Kay (1979) states that it feeds on aeolids of the genera Favorinus and Aeolidiella. It lays a pale
orange, spiral egg mass that hatches in about 7 days in the
Big Island, Maui, Oahu, Kauai(?) and Midway: also found in French Polynesia.
probably first reported from Hawaii in Kay & Young, 1969 (as Gymnodoris alba). It is listed in Kay, 1979 as G. alba. There remains some chance that more than one species are lumped under this name.
Photo: CP: 6
mm: Kapalua Bay, Maui; April 3, 2007.
Observations and comments:
Note 1: The two animals illustrated as "after feeding" (see photos)
have more strongly inflated bodies with better defined internal masses
than other animals. It seems likely that they have just fed recently
(the second animal
regurgitated a large amount of brownish material three days after
capture and appeared more normal after doing so). However, their
atypical appearance might also be due to a disease or parasites.
Note 2: An unusual animal with a pink
internal mass and radiating white bands might also be carrying a
parasite. Or, perhaps the differences are due to its reproductive stage since it also appears to be carrying eggs? (see photo)