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Additional Photos

atypical patterns

young, 8 mm

autotomized mantle

with food sponge

egg mass
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GALLERY

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Tayuva lilacina (Gould, 1852)

Maximum size: 35 mm (Kay,
1979).
Identification:
This
is a pale brown species decorated with irregular darker blotches.
The notum is covered with small papillae that vary in length. The
branchia are cream, frosted with white. Lines of patches on each side
of
the notum are often darker than the rest.
Natural history:
Tayuva lilacina
is a common nocturnal species. It is found primarily in the low
intertidal and tide pools though, rarely, it may occur at depths up to 21 m (69 ft). (Bertsch and Johnson,
1981) It occurs in
protected to exposed rocky habitats. It sometimes autotomizes portions
of its mantle when disturbed, presumably as a defensive measure and it
feeds on a turquoise encrusting sponge (Note 1).
It lays a cream egg mass with a variably ruffled margin that hatches in
about five days in the
laboratory.
Distribution:
Big Island, Maui, Oahu, Kauai and Kure: widely distributed in the
Indo-Pacific.
Taxonomic notes:
This
is the species listed as Discodoris
fragilis (Alder and Hancock, 1866) in Kay, 1979 and Bertsch and
Johnson, 1981. It is also listed in many sources as Discodoris lilacina. It was first
reported from Hawaii in Kay & Young,
1969.
Photo: John
Hoover: found by Darrell Takaoka; May 6, 1997.
Observations and comments:
Note
1: We've often found it associated
with this sponge in the field and have observed it feeding on fragments
of the sponge in dishes.
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