Roboastra luteolineata

(Baba, 1936)

Roboastra luteolineata
Photographed by: Trent Burkholder

Kingdom:Animalia
Phylum:Mollusca
Class:Gastropoda
Subclass:Opisthobranchia
Order:Nudibranchia
Suborder:Doridina
Family:Polyceridae
Species:Roboastra luteolineata

Comment from Marta Pola on photo #12085
It looks like a juvenil of Roboastra luteolineata.

Comment from Richard Willan on photo #10255
This is a very atypical individual with a violet background instead of the ‘normal’ black to dark blue background.

Comment from Richard Willan on photo #9286
This individual has a commensal shrimp (Periclimenes imperator) on its back.

Comment from Marta Pola on photo #2863
You can easily distinguish it because of the milky green bifurcate marks between the rhinophores and the longitudinal yellow lines on the notum and lateral sides.

Comment from Richard Willan on photo #1814
This individual seems to have too many lateral stripes to be Tambja luteolineata, so I have identified it as “cf. luteolineata” meaning similar to, and possibly the same as luteolineata.

Locality:

 

Pictures of Roboastra luteolineata

Roboastra luteolineata from Anilao, Philippines
Posted 6 years ago
Viewed 602 times
 
 

Similar Species

Author: Dr. Richard C. Willan

Roboastra luteolineata: Feeds voraciously on other nudibranchs; has very large oral tentacles; two pale stripes on the head between the rhinophores, neither of them expanded; no colour band around the rhinophoral sheath.

Tambja affinis or Tambja victoriae: Feeds on bryozoans; has relatively small oral tentacles; one pale stripe on the middle of the head between the rhinophores that is expanded; pale colour band around rhinophoral sheath.

Since they are so similarly coloured overall, perhaps some mimicry is going on.

The ways to separate Tambja affinis, Tambja victoriae and other Tambja species are set out nicely and clearly on Tambja affinis colour group in the Sea Slug Forum

Tambja cf. affinis from MyanmarIdentification reviewed by Richard Willan
(32 photos)
Tambja gabrielae from Bali, IndonesiaIdentification reviewed by Marta Pola
(66 photos)
Tambja olivaria from Malapascua, PhilippinesIdentification reviewed by Nathalie Yonow
(12 photos)
Tambja victoriae from Bali, IndonesiaIdentification reviewed by Richard Willan
(4 photos)
 
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