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Additional Photos
underside
side
front
rhinophores
less pink
young
without flash
feeding
mating
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GALLERY
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Phyllidiella pustulosa Cuvier, 1804
Maximum size: about 51 mm
(Hoover, 2006).
Identification:
This
species
is elongate with low, irregularly-shaped clusters of
smooth, conical, pink tubercles on
a black notum. The tubercles are usually simple and there are occasional
black lines ascending the sides of larger clusters. The mantle margin
is edged in pale pink and the rhinophores
are black. When seen underwater with the human eye, the animal may
appear to have gray-green tubercles against a black background due to
the absence of red light in deeper water. (see photo) It can be distinguished from Phyllidiopsis
fissurata by its continuous pink marginal line and solid
black rhinophores. It can be distinguished from Phyllidiella cf. lizae by the pink pigment overriding the posterior margins of the rhinophore sheaths.
Natural history:
Phyllidiella pustulosa
is commonly found in the open in rocky habitats. It lives in moderately
protected to highly exposed areas at
depths
of 4-26 m (13-85 ft). It
has been observed feeding on an orange encrusting sponge of the genus Stylinos.
Distribution:
Big Island, Maui, Lanai, Molokai, Oahu, Kauai, Niihau, French Frigate Shoals and
Kure:
widely
distributed in
the Indo-Pacific.
Taxonomic notes:
This
is probably the species listed as Fryeria
ruppelli Bergh, 1889b in Kay, 1979 and as Phyllidia pustulosa in Bertsch and
Johnson, 1981. (Note 1) The name means "full of
pustules" referring to the many pink tubercles. It is referred to as
the
"pustulose Phyllidia" in Hoover, 1998 & 2006. There's some chance that the animals labelled "less pink" could be distinct.
Photo: PF:
Haloa Point, Maui; June 18, 2007.
Observations and comments:
Note
1: The photo in Kay's Fig. 153 appears to show a typical P. pustulosa. However, her statement that the rhinophores are white is anomalous.
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