Photographed by: Dave Morgan
The black lines meet in front of the rhinophores and continue to the margin.
This is Phyllidiopsis krempfi
, the outer 2 black lines meeting in front of the rhinophores and extending to the margin.
This is a very interesting individual. The colour of the rhinophores (basal part pink and apical part black) indicates it cannot be Phyllidiella pustulosa
(in which the rhinophores are always entirely black).
This is an atypical individual in having its rhinophores entirely pink.
An atypical individual with very sparse and incomplete black lines.
A typical individual
This is a typical Indian Ocean Phyllidiopsis krempfi
, neat longitudinal lines meeting anterior to the rhinophores and extending forwards. In larger specimens, the central black may be in two lines.
Although the rhinophores look to be all black in this photo, I think they really have black upper sections and pink lower sections, thus matching those of Phyllidiopsis krempfi
. The form and colour of the body definitely match Phyllidiopsis krempfi
A resting individual sloughing off its mucous coat.
Note the characteristic rhinophores – half pink basally and half black distally.
I don’t know what happened to the half pink rhinophore
Thin black lines, generally longitudinal, meeting up in front of the rhinophores in a V and extending to the margin. Half black and half pink rhinophores.
In contrast, Phyllidiella pustulosa
would have completely black rhinophores. This photo shows why it is important to show the rhinophores in photos of phyllidiids.
This photo does not show the all-important rhinophores.
Even though the rhinophores are not visible (half pink and half black), the large compound tubercles and thin somewhat wavy longitudinal and radial lines are typical of Phyllidiopsis krempfi
A typical individual. Note that the rhinophores are not fully extended, but you can just see that the upper section of the rhinophores is black and the lower section is pale pink
Pictures of Phyllidiopsis krempfi
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Author: Dr. Richard C. Willan
The main differences between Phyllidiella and Phyllidiopsis are internal – to do with the anatomy of the foregut. Externally these three species are indeed quite similar in colouration and in having compound tubercles, and all three species vary a great deal between individuals. The main external differences are:
Phyllidiella pustulosa and Phyllidiopsis burni have entirely black rhinophores (bicoloured in Phyllidiopsis krempfi);
Phyllidiella pustulosa and Phyllidiopsis krempfi have narrow black lines (very broad black areas in Phyllidiopsis burni).
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