Opisthobranch records from Tonga

May 29, 2001
From: Don Barclay

Dear Bill,
Here is a list of the sluggish opisthobranchs I found in Utungake Island, Vava'u, Tonga in February of 2001. I wasn't specifically hunting slugs in Tonga, but did attempt to take note of the ones I saw. It's not a very impressive list, but for the record, here are the species of Opisthobranchs I found there, all seen in the Utungake area. (Pyramidellids, etc. not included)

Per your request, here are the rest of the pics I took. I've been hesitant to dump these to the Forum and simply add to the backlog, but perhaps the geographic records will be of some value to someone. Juvenile Hexabranchus sanguineus was fairly common in shallow water in front of the Tongan Beach Resort, but I didn't see any adults. I intended to take photos of Chelidonura inornata, since I had never seen it in person before, but forgot about it and found it in one of my containers after I got back to Samoa. It was still identifiable, but wouldn't have made a very attractive photo. I've included a couple of poor photos of for your Chromodoris decora and Noumea norba. In fact, I'll go ahead and send the lone photo I took of Phyllidiopsis striata, too, lest it turn out to be something else : ).

Tongan Slug/Bubble List
February 2001 Utungake Island, Vava'u

Atys sp. 1
Hexabranchus sanguineus
Gymnodoris ceylonica
Halgerda carlsoni
Cadlinella ornatissima
Chromodoris decora
Chromodoris kuniei
Chromodoris preciosa
Glossodoris hikuerensis & food sponge
Noumea norba
Flabellina bicolor
Phyllidiopsis striata

Not photographed:
Pupa coccinata
Pupa nitidula
Pupa sulcata
Bullina lineata
Chelidonura inornata
Atys naucum
Atys semistriata
Bulla ampulla
Bulla vernicosa
Plakobranchus ocellatus
Elysia ornata
Dolabella auricularia
Dolabrifera dolabrifera
Chromodoris aspersa
Chromodoris fidelis
Phyllidia coelestis
Phyllidiella pustulosa



Barclay, D., 2001 (May 29) Opisthobranch records from Tonga . [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4430

Dear Don,
These records are very interesting, for as I say at the top of the page, we know very little about Tonga's opisthobranch fauna, and being towards the eastern limit of the Western Pacific it is interesting to know what occurs there.
Bill Rudman

Rudman, W.B., 2001 (May 29). Comment on Opisthobranch records from Tonga by Don Barclay. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/4430