(Rüppell & Leuckart, 1830)
Photographed by: Daniela Wolf
A very small juvenile individual.
A juvenile individual.
A very small juvenile individual
This is a typical Hypselodoris infucata
Clearly the presence of dark purple on the rhinophoral stalks isn’t a consistent character for only Hypselodoris kanga
because some of these animals in this batch of Hypselodoris infucata
have them too (photos #2380
). So the shape of the gills and spots on the gills are the best characters to tell them apart.
The swelling on the right side below the mantle is the genital organs.
A typical individual.
The gills are out of focus, but I think they are diamond-shaped and not triangular in cross section.
Though the gills are not in sharp focus, the 2nd, 3rd and 4th gills from the top are definitely diamond-shaped (that is, narrow at the front), which make it Hypselodoris infucata
Very small juvenile individual.
A very small juvenile individual that is yet to acquire the completely red rhinophoral clubs of the adult of this species.Hypselodoris infucata
a very small juvenile individual (foreground) and Mexichromis multituberculata
(background). Both are probably eating the same sponge.
A bit hard to see the gills are diamond-shaped section here, except for the hindmost gill – which is clearly acutely pointed anteriorly (in contrast to Hypselodoris kanga
, in which each gill is triangular in cross section and so flattened anteriorly).
This is an interesting photo that I am pretty sure the individual is Hypselodoris infucata
based on mantle, rhinophoral, and gill coloration. The only inconsistency is the two front gills which seem to be triangular (normally all the gills in Hypselodoris infucata
are diamond-shaped, in contrast to Hypselodoris kanga
where all are triangular). However, this apparent triangular shape in just these two gills may be an artefact of the way these gills are positioned in the photo. It would be nice to see another photo of this individual from a different angle.
Having said that, I must add that Debelius & Kuiter have clearly got some identifications wrong for this species group in Nudibranchs of the World and all the species (Hypselodoris infucata
, Hypselodoris obscura
, Hypselodoris saintvincentius
, Hypselodoris festiva
, Hypselodoris kanga
) are nowhere nearly as sharply delimited as they make out (in other words there is much greater intraspecific variation in colour pattern than this text would suggest), so it is not an infallible reference source. In particular, on page 127 the centre left photo shows an individual in the act of feeding from Bali that is Hypselodoris kanga
and not Hypselodoris infucata
Previous comment from Dr. Richard Willan: A juvenile individual.
There is a longitudinal white mid-dorsal stripe and the gills are diamond-shaped (◊), so it is Hypselodoris infucata
and not the similar-looking Hypselodoris kanga
Even though the gills are not in focus, the body coloration is that of typical Hypselodoris infucata
An extremely variable species it is distributed across the Indo – Pacific region, grows to 30 mm and feeds on sponges.
- Bali (74) Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
- Lembeh (36) Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
- Ambon (3) Apr, May, Dec
- North Sulawesi (1) Apr
- Flores (1) Nov
- Kaimano (1) Apr
- Raja Ampat (1) Dec
- Manado (1) Sep
- United Arab Emirates
- Brunei Darussalam
Pictures of Hypselodoris infucata
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Author: Erwin Kodiat
To distinguish between Hypselodoris kanga and similar looking Hypselodoris infucata is by looking at the gills. If they are triangular in cross section, and edged in red (blue in other parts of the world) and with a row of yellow spots up the broad outer face, then it is Hypselodoris kanga. Otherwise it is Hypselodoris infucata
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