Halgerda willeyi from the Kermadec Ids

April 29, 2006
From: Ian Skipworth


Here's Halgerda willeyi (I think) from The Kermadecs.

Locality: Napier Island, near Raoul Island, Kermadec Islands, 12m, New Zealand, Pacific Ocean, 20 March 2006, Rocky reef. Length: 40 mm. Photographer: Ian Skipworth.

Ian Skipworth


Skipworth, I.R., 2006 (Apr 29) Halgerda willeyi from the Kermadec Ids. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16432

Dear Ian,
This certainly looks like H. willeyi. For those not familiar with the Kermadec Islands, they are about 1000k NE of New Zealand and volcanically active, lying on the edge of the Kermadec Trench, where the Pacific Plate buries itself under the Australasian Plate. Their fauna is a mixture of northern New Zealand and local endemics, and Pacific tropical species.

Halgerda willeyi has been reported from the Kermadecs, (Brook, 1998) but it is good to get a photographic record

  • Brook, F.J. 1998:  The coastal molluscan fauna of the northern Kermadec Islands, southwest Pacific Ocean. Journal of the Royal Society of New Zealand, 28: 185-233.

Best wishes,
Bill Rudman

Rudman, W.B., 2006 (Apr 29). Comment on Halgerda willeyi from the Kermadec Ids by Ian Skipworth. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/16432


Halgerda willeyi

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