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Leslie

Critter Expert
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Posts posted by Leslie


  1. As usual Jon is right as is his advice if you want a more exact id. There aren't many echiuroids reported from Florida - the SMS/Fort Pierce invert list doesn't even include them. I found mention of 3 species in the genera Lissomyema, Thalassema, and Ochetostoma. Of the 3, your critter best fits Ochetostoma because of the very distinct "grid" which is faint or not visible externally in the other two.


  2. Hi Kay -

    An ID correction courtesy of another friend & shrimp expert, Sammy De Grave from Oxford University - "Pontonia pinnae is an east Pacific species. That photo is either P.mexicana or P.domestica, likely the former. Just had to do some Pontonia questions for Art, so stumbled across that post."


  3. Looks like the California elbow crab Heterocrypta occidentalis. They may be more common in soft bottom areas since an alternative common name is the sandflat elbow crab. Monterey is about as far north as they get.


  4. Hi Pam - In Cyphoma signata - the fingerprint - there are rows of patches with transverse brown lines on a yellow background. Occasionally the spots of Cyphoma gibbosa - the flamingo tongue - become more angular or distorted, or in just 1 few rows. The mantle is white and the spots have yellow centers & distinct brown outlines. I think these fall into gibbosa.

    Cheers, Leslie


  5. hi Rudolf & welcome to Wetpixel. It's pretty essential to say where the specimens were collected. Species in the Indo Pacific will be quite different from those in Europe or the Caribbean.

     

    The worm is a sea cucumber and I can't do better than that regardless of where you found it.

     

    Cheers, Leslie


  6. That's really fascinating. (Of course I especially liked the swarming polychaetes that were zooming around :) ) Some years ago I saw 40 or more Aplysia californica forming a circle around the base of a boulder. That turned out to be a mating chain so I wonder if the tower could be a a different form of mating aggregation. I sent off a message to Bill Rudman at the Sea Slug Forum with the urls for this thread & your video Mean. He's bound to find it quite interesting.

     

    For some great photos & more information on Aplysia mating chains see this thread on the Sea Slug Forum http://seaslugforum.net/showall/seahmat


  7. You're with Tony right? He should know it -- http://www.tonywublog.com/20100303/the-cra...nudibranch.html :-D

     

    The name Marionia pustulosa is used for several different species in web pics. I got the id from Debelius & Kuiter's Nudibranchs of the World book. A lot of nudi specialists contributed to the book so I assume it's pretty good.

     

    This one is clearly different - http://www.nudibranch.com.au/pages1/MARIONI1.htm It was photographed in part by Richard Willan who's a museum nudi specialist. This one's distinct too http://www.nudipixel.net/photo/00021926/ Lembeh Resort's image matches the one in D&K's book http://www.lembehresort.com/zoom.php?id=/i...0Kuzmin&cal

     

     

     

    P.S. -- How about an enlargement of the shrimpie?


  8. Thanks! The first is definitely a cumacean, the second is a copepod with 2 clumps of eggs attached to its posterior, and the third is a femlae caprellid amphipod (commonly known as skeleton shrimp). The caprellid is bent backwards; its hind legs are at the top, the head with 1 yellow eye showing is at the bottom, and inbetween is the brood pouch with eggs.

     

    Cumaceans are small crustaceans with a very characteristic body shape. The anterior part of the body is large compared to the abdomen which is reduced to a jointed cyclinder. See http://www.flickr.com/photos/olafial/211822907/ or

    http://eol.org/pages/39771


  9. Be careful about ids on any web site or guide book. Even the best ones like Zubi's have mistakes & the worst ones are just horrible. Sometimes the identification is wrong (like the phoronid Zubi has listed as a polychaete) or it's an out of date name like Quadrella granulosa. A little digging shows that several Quadrella experts agree that granulosa is the same thing as Quadrella coronata. Since coronata is the older name that's the one that is valid. I also make mistakes all the time from relying too much on photos.


  10. The first one is a hippolytid, the third is commonly identified as Hippolyte commensalis. 2nd one I haven't seen before. There are two other crustaceans in the 2nd shot - right below the shrimp is what seems to be a cumacean and another pod at about 10:30. Would you mind cropping & enlarging the 2 others? I'd like to have a better look at them.

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