segal3 0 Posted January 18, 2006 I know...it never ends <_ src="%7B___base_url___%7D/uploads/emoticons/default_rolleyes.gif" alt=":rolleyes:"> ^--Looks similar to Periclimenes tenuipes, but everything doesn't match up (not as transparent, and no lines connecting eyes). The chelipeds are orange-tipped as they are in P. tenuipes however... ^--Similar to Urocaridella antonbruunii but eye color is wrong, and banding is different... ^--Resembles Xenocarcinus conicus but has a longer rostrum (or so it seems)... ^--Similar to Periclimenes amboinensis but the patterning is off. Good luck I really need a more dedicated book for these IDs... ~Matt Segal Share this post Link to post Share on other sites
Leslie 0 Posted January 19, 2006 Hi Matt - I love doing ids. If you get more books there'll be less for me to do.... There are several Periclimenes that are similar to P. tenuipes. The closest I can find to your image is P. platycheles. Probably need a specimen to be certain. The second shrimpy is Urocaridella sp. A, still undescribed but common & well known. The crab isn't Xenocarcinus at all. It's a majid decorator crab with a bifid rostrum, perhaps in the genus Naxioides (N. taurus is common) or Hyastenus (H. bispinosus is common). Your fourth one I think is Araiopontonia odontorhyncha rather than any of the Periclimenes-crinoid commensal species. They're a problem anyway. I know some of the books say amboinensis, cornuta, & commensalis can be distinguished by length of the fingers or other characters but I was told by Sammy deGrave, one of the top shrimp experts, that this isn't true - at least not for images. He won't accept any image-based id for these species. Also, there are shrimp in several other genera like Parapontonia that live on crinoids & look very similar. Is it any wonder I keep telling people to collect specimens if they want accurate ids? (Bet you're tired of hearing that by now! ) Nice pics, by the way - especially the first. Share this post Link to post Share on other sites
