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Additional Photos
defensive fluid
pair
shell
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Volvatella ventricosa Jensen & Wells, 1990
Maximum size: about 11 mm (Kay, 1979 as Volvatella fragilis).
Identification:
This
species has a thin, faintly straw-colored shell that narrows into
a
spout posteriorly. The animal is translucent white frosted with opaque
white flecks.
Natural history:
Volvatella ventricosa
is
known from animals associated with Caulerpa sp.
It releases a milky fluid
when disturbed, presumably for defensive purposes.
Distribution:
Oahu(?) and Midway: widely distributed in the western & central Pacific.
Taxonomic notes:
It was first
recorded in Hawaii under this name from Midway Atoll by Terry Gosliner and PF on
May 30, 1993. However the animal listed in Kay, 1979 and Edmondson, 1946 as Volvatella fragilis
Pease, 1860
may also be this species (based on comparison with the original
description). If this is confirmed, it was first reported from Hawaii in
Pease, 1860. Volvatella fragilis was listed in Kay, 1961 as Arthressa evansi.
Photo: PF:
shell 6.5 mm: Midway Atoll; May 30, 1993.
Observations and comments:
Note
1: ( )
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