Thuridilla gracilis

(Risbec, 1928)

Also known as: Thuridilla bayeri, Thuridilla ratna

Thuridilla gracilis
Photographed by: Indra Swari

Kingdom:Animalia
Phylum:Mollusca
Class:Gastropoda
Subclass:Opisthobranchia
Order:Sacoglossa
Family:Plakobranchidae
Species:Thuridilla gracilis

Comment from Nathalie Yonow on photo #24124
Very strange locality for this species - mistake??

Comment from Nathalie Yonow on photo #22079
This is the first gracilis I have seen without the orange tips.

Comment from Nathalie Yonow on photo #36569
Another specimen with unpigmented rhinophores.

Comment from Nathalie Yonow on photo #37675
In-between form.

Comment from Nathalie Yonow on photo #38063
Another record with white/cream rhinophores and no orange or black pigmentation.

Comment from Nathalie Yonow on photo #21582
Another form with different rhinophores, banded with white, orange and black. At least a dozen records now.

Comment from Nathalie Yonow on photo #21583
Banded rhinophores.

Comment from Nathalie Yonow on photo #23143
Whit,. orange, black-tipped rhinophores.

Comment from Nathalie Yonow on photo #26664
Black margins to the rhinophores.

Comment from Nathalie Yonow on photo #28506
Banded rhinophores again but you can just see the white longitudinal lines.

Comment from Nathalie Yonow on photo #29103
Banded rhinophores.

Comment from Nathalie Yonow on photo #32429
White orange black banded rhinophores.

Comment from Nathalie Yonow on photo #33253
This shows perfectly the transition from the usual form to the 'banded rhinophore' form.

Comment from Nathalie Yonow on photo #34222
Form showing the transition between normal and banded rhinophore form.

Comment from Nathalie Yonow on photo #35807
Banded rhinophore form.

Comment from Scott Johnson on photo #30443
This is within the range of variation of T. gracilis. Looking close, you can also detect a hint of orange on the inner parapodial margin.

Comment from Richard Willan on photo #2629
In contrast, Thuridilla splendens has a yellow head, grows to a much larger size, and does not “nod” its head as it is crawling along.

Locality:

 

Pictures of Thuridilla gracilis

Thuridilla gracilis from Lembeh, IndonesiaIdentification reviewed by Nathalie Yonow
Posted 10 years ago
Viewed 4177 times
Thuridilla gracilis from Bali, IndonesiaIdentification reviewed by Richard Willan
Location: Bali, Indonesia
Posted 10 years ago
Viewed 3598 times
Thuridilla gracilis from Tioman, MalaysiaIdentification reviewed by Nathalie Yonow
Posted 10 years ago
Viewed 4017 times
Thuridilla gracilis from Ga'an Point, GuamIdentification reviewed by Nathalie Yonow
Posted 10 years ago
Viewed 4200 times
Thuridilla gracilis from Raja Ampat, IndonesiaIdentification reviewed by Richard Willan
Posted 9 years ago
Viewed 3860 times
Thuridilla gracilis from Green Island, TaiwanIdentification reviewed by Richard Willan
Posted 9 years ago
Viewed 3899 times
Thuridilla gracilis from Bali, IndonesiaIdentification reviewed by Richard Willan
Location: Bali, Indonesia
Posted 9 years ago
Viewed 2682 times
Thuridilla gracilis from Ambon, IndonesiaIdentification reviewed by Nathalie Yonow
Posted 9 years ago
Viewed 3304 times
Thuridilla gracilis from Bunaken, IndonesiaIdentification reviewed by Richard Willan
Posted 9 years ago
Viewed 3661 times
Thuridilla gracilis from PNGIdentification reviewed by Richard Willan
Location: PNG
Posted 9 years ago
Viewed 3698 times
Thuridilla gracilis from Queensland, AustraliaIdentification reviewed by Richard Willan
Posted 9 years ago
Viewed 3087 times
Thuridilla gracilis from Bali, IndonesiaIdentification reviewed by Richard Willan
Location: Bali, Indonesia
Posted 9 years ago
Viewed 3470 times
 
 
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