View Full Version : ID the crab

05-17-2009, 02:42 AM
Can anyone help me identify this species of mangrove crabs. It is stunning and everywhere in thesse parts:hmm3grin2orange:


05-17-2009, 03:04 AM
Sally lightfoot? Maybe?


05-17-2009, 03:10 AM
The picture you found look similar no doubt but no other pic of the species do. Might it have the wrong idenity in your pic? On the other hand their seem to be big local variation in the species.

05-17-2009, 03:12 AM
Yeah. I noticed the same. I will keep looking.

05-17-2009, 03:14 AM
Thanks. An ID would be very appriciated. It is a stunning crab. more so than the pic shows. will try to get my own. the claws are bright yellow, the shell black with spots in the same bright yellow.

05-17-2009, 04:08 AM
I am drawing a blank. The only thing I can find that is close is that one. Sorry. :( I have tried every approach I can think of. Maybe someone else can figure it out. Would there be a zoo or university there that may know?

05-17-2009, 04:11 AM
Might have to contact the university in Leon.

But this is nicaragua. There is always a good chance that it is an undescribed species.

Thanks for the effort.

05-17-2009, 04:13 AM
Anytime! I am just sorry I could not provide better info.

05-17-2009, 05:16 AM
You tried. thats what count

05-17-2009, 03:52 PM
Bump to see if anyone else can help with this.

Wild Turkey
05-17-2009, 04:24 PM
Red spotted "mangrove crab" scientific name i cant seem to find though


They are native to your area and come in a zillion variants, you seem to have one of the cooler ones, the red spotted
LOL! they took the link down 2 seconds after i posted it...let me see if i cant find another pic..

Its a permission issue; Here: just look second pic from the left, top row:http://images.google.com/images?hl=en&um=1&sa=1&q=red+spot+mangrove+crab&btnG=Search+Images&aq=f&oq=

05-17-2009, 04:33 PM
I saw that last night too. But that one appears to be the only one that looks like that at all?

05-17-2009, 04:37 PM
It does seem to be to only one and it really don't look like the crabs really do. I will try to go and take a better pic today. Actually I will head out now.

Wild Turkey
05-17-2009, 04:39 PM
I saw that last night too. But that one appears to be the only one that looks like that at all?

I was second guessing myself as well, but after a minute or two of research is seems there are a million variants of "mangrove crab" or "mud crabs" and as usual (it seems) Will got lucky and has one of the coolest color morphs out there, a rare one since pictures are hard to come by. Really cool stuff.

Since you say they are from the mangroves, i cant see it being anything else but a mangrove crab really. There is always the possibility that people on the internet are confused though, it does happen:hmm3grin2orange:

I'll keep working on it just to make sure

05-17-2009, 04:46 PM
Well i might just start exporting the color morph so that you can get them as well. Look a lot better then the mangrove crabs in the pet stores.

Wild Turkey
05-17-2009, 04:51 PM
Another pic of a red spotted mangrove crab. I get the feeling "red spotted" is just being used to determine the colors, its not the species so that may be why we are having trouble finding ones like this. Have you asked any locals? I have a feeling they will say mangrove crab/mud crab


Heres one thats "maroon" so they do come in a lot of variants between red/spotted and regular brown.


05-17-2009, 08:57 PM
The locals just say crab.

I just gotten back from the swamp and will post pictures in a new thread in a few minutes

05-17-2009, 09:44 PM
Posting better pics here as well. On the final pic you can see the light hit one of them and see the true color. unfortunately I had to shade them to prevent them from escaping.


05-17-2009, 11:22 PM
Ok so I have been researching this for literally hours and I have not come up with any true match. I am going to post some links of things that you should look over. I am gonna take a guess that there has not been too much research done on the species you have been taking photo of, or maybe I am just lame. LOL I think that if anything it is probably Grapsidae family, esp because it looks alot like a morph of grapsus grapsus, then again I am no scientist....



And I am not giving up yet........just taking a break.

Wild Turkey
05-17-2009, 11:27 PM
They are really gorgeous, whatever they are! Those specimens are awesome

05-17-2009, 11:38 PM
Thanks for all your work gayle. Will read the links later.

05-17-2009, 11:50 PM
Yeppers!! I get a little ticked off when I cant find an answer!!! Does it show???

Wild Turkey
05-18-2009, 12:01 AM
Yeppers!! I get a little ticked off when I cant find an answer!!! Does it show???

Same!!!!:hmm3grin2orange: I think thats a trait common among AC folk

We also cannot rule out it being a slight evolution or off shoot of a species, especially since Will seems to have a lot of odd colored organisms in the area. Im sure its not helping our frustrations lol

05-18-2009, 12:49 AM
It'd be awesome if it was undescribed, though. Take one to that univesity or something.

05-18-2009, 12:57 AM
LOL WT maybe he is tricking us!! He took it and painted it so we would go stir crazy!!!

I am sure their is a logical answer to this. It may very well be just like you said. Maybe a hybrid. It is odd that there are so many around there, but so little documentation.

I think we really need to go there and do some research!!!! Bring back some specimens! LOL

05-18-2009, 01:38 AM
the only things i could find under spotted mangrove crabs are
goniopsis cruentata and aratus pisoni

and they dont quite look the same. they dont have the colors your crab has. but as others have said perhaps its a hybrid.

05-18-2009, 01:57 AM
I doubt it is a hybrid. There are thousand of them. They are the dominant crab here and they live along atleast 200 miles of mangrove forrest.

05-18-2009, 02:12 AM
well then maybe it IS an undocumented species. you should take one to the univerity and have it named after you

05-18-2009, 02:17 AM
well then maybe it IS an undocumented species. you should take one to the univerity and have it named after you
No, after the AC.thumbs2:

05-18-2009, 02:21 AM
Or this forum.

Ayseeius Willamus

Although that would require a new genus.

Either way.

Kazangius. would be a pretty cool name if you get to name it.

Just putting it out there.

05-18-2009, 03:11 AM
Lets not get to excited now. I will see if I get the chance to go by the university some day.

05-18-2009, 05:14 AM
I have sent an email to the invertebrate faculty at the Smithsonian to see if they can and want to help.

05-18-2009, 12:04 PM
Good idea. They have a pretty large online list of crabs, but very few pics. Let us know what they say!!!!!!!!

05-18-2009, 03:19 PM
im gonna id it as pearl beauty

Wild Turkey
05-18-2009, 04:04 PM
If its a new species that would be really cool!

I agree name it after the forum! Aquaria communitus:hmm3grin2orange:

05-18-2009, 08:37 PM
I like the name pearl beauty :-)

I did recieve a respons that they have forwarded my mail to their expert in the field. Now I just have to wait and see what he says.

05-18-2009, 08:40 PM
Oh cool!!! Expert in the field!!!!!!!!!!!!!!!! Woo HOO!!!!!!!!!!!!!!! That sounds so cool!!!!

05-19-2009, 02:00 PM
Oh cool!!! Expert in the field!!!!!!!!!!!!!!!! Woo HOO!!!!!!!!!!!!!!! That sounds so cool!!!!

the crabs are even cooooler

Wild Turkey
05-19-2009, 03:15 PM
Very cool! expert in the field? Thats awesome :D
I also like the name pearl beauty thumbs2: good choice