Hopkinsia? or Okenia? sp.

March 16, 1998
From: Erwin Koehler

Hello,
a friend of mine gave some photos to me, to add them at my Mediterranean Slug Site. One of them looks rather similar to your Hopkinsia sp., done at the Philippines.

Maybe you can identify it? If you like you can copy and resize the jpg for your forum.

Photo by: Georg Heinze, Worfelden, Germany. Size: about 3 cm, Depth: about 20 m, Feb. 1997. Philippines
Erwin Koehler
Darmstadt, GERMANY.

Medslugs.Koehler@t-online.de

Koehler, E., 1998 (Mar 16) Hopkinsia? or Okenia? sp.. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/71

Your nudibranch is similar in shape to Hopkinsia, but there appears to be a distinct edge to the mantle all around the body. The cerata-like mantle papillae seem to be outgrowths of that edge which is much like the arrangement found in species of Okenia. Hopkinsia and Okenia are closley related and some authors have suggested they should be 'lumped' into one genus. Whatever transpires it appears to be an unnamed species, which is not unsurprising in the rich waters of the Philippines and Indonesian Archipelago. Let us hope the marine life survives the ecological disasters of reef dynamiting and land clearing which have destroyed a large percentage of the surviving marine ecosystems of the region.

Rudman, W.B., 1998 (Mar 16). Comment on Hopkinsia? or Okenia? sp. by Erwin Koehler. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/find/71

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