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Zoila friendii kostini northern form , Lorenz & Chiapponi, 2007
Size
71.4 mm
Locality
Dongara, WA
Note
Over the past ten years I
have had a desire to collect
friendii on the continental
shelf west of Geraldton to
study the inter-grade
between aurata and kostini.
Until our last trip we had only
found one live specimen in
200 metres of water east of
the Abrolhos Islands. The
reason for the difficulty in
doing this has been
exceptionally strong currents
in the area and our inability to
find sponge beds. In February 2023 we had some
success finding a number of
specimens, west south west
of Dongara and to the
southwest of Geraldton. The
shells we found were
different to both kostini and
aurata. They were
consistently larger than
southern kostini, more
colorful with coarse spotting
not unlike aurata, and less
rounded with mostly china
white base. They are quite
vercoi like. Perhaps 70%
kostini and 30% aurata is an
apt description but I have
decided to refer to them as
"Northern Kostini". This
specimen is a crabbed shell
we found in 205 metres of
water west south west of
Dongara in February 2023.
Dead collected shell with significant nacre loss.