Onchidoris evincta

Image courtesy of Phil Gardner
Keystone Jetty, Whidbey Island, Washington

Onchidoris evincta (Millen, 2006)

Tiny white dorids - Oh My.

They are not my friends. This little one was previously referred to as Adalaria sp. 1 in Eastern Pacific Nudibranchs. Unless you are working with a great photo like this one, they all look alike.

O. evincta is white or cream colored, has an oval elongate body that is slightly broader in front and bears small tubercles with a crown of projecting spines. There are 4-7 tubercles at the base of the rhinophoral sheath and the gill is circular. It can have a few scattered opaque white spots on body and a small opaque white gland behind gills. It differs from all the other tiny white dorids by having the projecting crown of long spines on the tubercles. It reaches 16 mm (0.6 in), and ranges from Tatitlek, Alaska to Cape Arago, Oregon.

This little guy can be found on a tan encrusting bryozoan, in the low inter tidal to 15 m (49 ft) deep.

Dave Behrens
Sammamish, WA 98074
Feb., 2022
Send Dave email at davidwbehrens@gmail.com

Phil Garner, Jan Kocian, and Merry Passage at Key Stone Jetty
Whidbey Island, Washington

Well, this motley crew needs no introduction to the ardent followers of the Slug Site! Phil, Jan, and Merry are without doubt dedicated slug aficionados as exhibited by their fortitude to dive Key Stone Jetty in the middle of winter! I mean, one gets cold just looking at the image!

Our hats are off to you Phil, Jan, and Merry!

Michael Miller

Send Phil mail at pacificcoast101@yahoo.com
Send Jan mail at honkoc@hotmail.com
Send Merry mail at mbpassage@yahoo.com

Attention all you Sluggers, and you know who you are!

The NSSI 2nd edition is now available in ebook PDF and book form . The hard back version will become available Nov. 1st. Both will cost $65 (individually).

You will need to jump through a few hoops to get the electronic version as pdf distribution is protected by Adobe ID!! Please read the following to enable reading your electronic purchase!

This new 2nd Edition is updated and reorganized, including 185 new species. Among other features, the new edition includes additional photographs of species, an identification key, and an up-to-date classification reflecting the latest evolutionary relationships. The Indo-Pacific represents the largest expanse of tropical ocean in the world, stretching from the Indian Ocean coast of southern Africa and the Red Sea to the central Pacific of the Hawaiian Islands, Easter Island and the Marquesas.

This region supports the most diverse marine fauna of any place in the world for most groups of marine organisms. The nudibranchs and sea slugs are no exception to this rule; there are about 3,000 described species of these organisms in the world and at least 40% of these have been found exclusively in the Indo-Pacific tropics. This book illustrates 2,138 Indo-Pacific nudibranchs and sea slugs, including many undescribed species.

From left to right, Terry Gosliner, Angel Valdes, Dave Behrens La Jolla, Calif.

Send Dave email at davidwbehrens@gmail.com

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