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Additional Photos
underside
side
tall tubercles
yellow
large, 28 mm
young
feeding
shell
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GALLERY
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Lamellaria sp. #1
Maximum size: 28 mm.
Identification:
This
is
a
flattened
species with variably developed
tubercles.
The
dorsal
surface
in
young
animals
may be reticulated with opaque pigment. (Note 1) In
older
animals, the
reticulation is lost, tubercles may become more prominent
and secondary, superficial white pigmentation develops on the dorsal
surface, usually forming a posterior bar.There are five irregularly
tuberculate projections
on the dorsal surface: one central and four lateral with the lateral
projections usually tinged with violet. The background color
varies from white to yellow to bright orange-red. The cephalic tentacles are
flecked
with
white. The underside of the foot usually has faint orange-brown flecks.
Natural history:
Lamellaria sp. #1
is a common species in moderately protected to moderately exposed rocky
habitats and Halimeda
kanaloana beds at depths of < 1 to 21 m (< 3 to 69 ft).
It may be deriving its color primarily from the tunicates it eats and
larger orange-red animals may be mimicking sponge eating dorids such as
Aldisa
pikokai. It may feed on several species of didemnid tunicate
since we've photographed it on at least two showing probable feeding
damage.
Distribution:
Big Island, Maui, Oahu, French Frigate Shoals and Lisianski: probably widely distributed in the
Indo-Pacific.
Taxonomic notes:
The
animal
collected
at
Barber's
Point,
Oahu
in
1965
and
referenced
in
Kay,
1979
was
probably
this
species.
There is some uncertainty in separating it from other listed species of Lamellaria.
Photo: CP: 15
mm; orange-red; low tubercles: Kapalua Bay, Maui; April 17, 2009.
Observations and comments:
Note
1: If present, the dorsal reticulations of young animals
appear to be intermediate in size (proportionally) between those of
young Lamellaria sp. #5 and Lamellaria sp. #2. As a consequence, the assignment of juveniles may be problematic.
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