Chromodoris willani

Rudman, 1982

Chromodoris willani
Photographed by: Indra Swari

Species:Chromodoris willani

Comment from Nathalie Yonow on photo #11613
It should be C. willani, pale blue (with extra broken up black markings) with speckled gills and rhinophores. The flourescent photography is a bit strange though??

Comment from Richard Willan on photo #4622
This individual seems to have low, close-packed, polygonal pustules all over its mantle – a feature never recorded in this species before.

Comment from Richard Willan on photo #2536
Both are Chromodoris willani

Comment from Richard Willan on photo #2498
Both are definitely Chromodoris willani

Comment from Richard Willan on photo #2111
Chromodoris willani with commensal shrimp Periclimenes imperator ‘on board’. The regular host of this shrimp is Hexabranchus sanguineus, where it is very well camouflaged, but it often lives on other nudibranchs where it is very conspicuous.



Pictures of Chromodoris willani

Chromodoris willani from Verde Island, Philippines
Posted 8 years ago
Viewed 1658 times

Similar Species

Author: Nila Murti

With their strikingly similar colours and patterns, it is quite tricky to distinguish Chromodoris willani, Chromodoris lochi, Chromodoris dianae and Chromodoris boucheti. Chromodoris willani is easier to differentiate from the other three.

Apparently Chromodoris lochi and Chromodoris dianae have different number and shape of gills but this isn't always easy to notice by laymen. The 'easier' external characteristic differences to spot are as follows:

Chromodoris willani has translucent translucent rhinophores and gills, with tiny white dots on them.

Chromodoris boucheti has yellow tipped rhinophores, but with a special pattern in the yellow tipped gills: there is a vertical black line in the middle of each gill running from the base up. The mantle of Chromodoris boucheti is uniformly colored and smooth looking, without any white specks.

Chromodoris lochi has a rather elongated body of the Hypselodoris genus. It has pink or yellow tinted rhinophores and gills which are sometimes translucent (but with no white dots like in Chromodoris willani). The mantle of Chromodoris lochi is uniformly colored and smooth looking, without any white specks. Its dark/black elongate band in the mantle is thin and unbroken.

Chromodoris dianae also has pale blue based gills and rhinophores, with orange yellow or deep yellow tips, but has more of an oval body form of true Chromodoris genus. Its mantle has white specks or dots hence not smooth looking. The black band in Chromodoris dianae are thicker and discontinuous, especially around the rhinophores.

Chromodoris dianae from Anilao, Philippines
(290 photos)
Chromodoris lochi from Bunaken, IndonesiaIdentification reviewed by Terry Gosliner
(249 photos)
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