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Crustacean ID?

Discussion

2 replies
Posted by Charles Gangas on March 4, 2017 at 3:37 PM
Crustacean ID?
Would anyone have an ID on this crab? The image was shot in Playa Flamingo, Costa Rica, two weeks ago and my research has left me with one identical photo but no ID attached.

Thanks in advance for any help.

Chuck Gangas
Posted by Max Waugh on March 4, 2017 at 7:11 PM
It looks to me like an immature Sally Lightfoot Crab.  Honestly, I had no idea they existed in Costa Rica, though I've been there numerous times.  They're ubiquitous in the Galapagos, and the juveniles are a darker red with the spotting on the shell you see here.  You can see the light blue coming in underneath, which was the main clue for me, and after a quick search, it appears they are indeed found in CR.

The other colorful reddish crab I see in Costa Rica is the Halloween crab, but it's more of a land crab (found in the jungle far away from shore sometimes) and has a thicker, rounder body shape.  It also doesn't have the blue coloration underneath.

Max
Posted by Charles Gangas on March 5, 2017 at 3:47 PM
Thank you Max, greatly appreciated.