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Tubuca signata

Species of crabs From Wikipedia, the free encyclopedia

Tubuca signata
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Tubuca signata, the signalling fiddler crab,[1] is a species of fiddler crab that is found in Australia from Queensland to northwestern Australia.[2]

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Description

Tubuca signata males have one claw that is significantly larger than the other, while females have two equal-sized smaller claws. The male adult upper claw (pollex) is smooth and bright white while the lower claw (dactyl) has a single groove along its length. The wrist (manus) is red.[3] The male carapace is typically up to 17 mm wide (95% of individuals are this size or smaller), with females slightly smaller.[1]

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References

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