New sacoglossan for New Zealand
August 22, 2005
From: Ian Skipworth
Hi Bill
I've no idea what the attached photo is of. I've not seen anything like it before but it is very small so could easily be overlooked. As always, your comments would be much appreciated.
Locality: Poor Knights Islands, northeastern New Zealand. Depth: 12 m. Length: 5 mm. 20 August 2005. Rocky reef. Photographer: Ian Skipworth
Regards
Ian
ian@ianskipworth.com
Skipworth, I., 2005 (Aug 22) New sacoglossan for New Zealand. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/14616Dear Ian,
This is indeed a nice find. It isStiliger aureomarginatus, a sacoglossan sea slug which feeds on species of Codium. I am pretty sure the green background in your photo is a species of Codium. To my knowledge it has not been reported from New Zealand before. The species was described from Western Australia and we have records on the Forum from Hong Kong, Japan, East Timor and Sydney. I guess it is one of those tropical species which seems to find the waters of the Poor Knights Ids quite acceptable. As you say, it is hard to say of this is a recent arrival or just another little animal which has been previously overlooked. Congratulations on seeing it!
Best wishes,
Bill Rudman
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