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Phylum Arthropoda > Subphylum Crustacea > Class Malacostraca > Order Decapoda > Brachyurans
Spotted reef crab
Carpilius maculatus
Family Carpiliidae
updated Oct 2016

Where seen? This crab with big red round spots is seldom seen on our shores. So far, on reefy southern shores.

Features: Body width to about 9cm. This crab has a distinctive pattern of large spots on a beige to pink body. It has four blunt spines between the eyes.
It is more active at night.

Human uses: According to SeaLifeBase, it is collected extensively for food. While it is reported as poisonous, tests could not confirm it. Possibly the crab becomes toxic for a short period after feeding on poisonous molluscs.

Status and threats: Our Spotted reef crab is listed as 'Endangered' among the threatened animals of Singapore.
Like other creatures of the intertidal zone, they are affected by human activities such as reclamation and pollution.

Sisters Island, Jul 04
 

Kusu Island, Jun 10
Photo shared by Loh Kok Sheng on his blog.

Family Carpiliidae recorded for Singapore
from Wee Y.C. and Peter K. L. Ng. 1994. A First Look at Biodiversity in Singapore
in red are those listed among the threatened animals of Singapore from Davison, G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore Red Data Book: Threatened plants and animals of Singapore.


  Family Carpiliidae
  Carpilius maculatus (Spotted reef crab) (EN: Endangered)

Links

References
  • Lee Bee Yan and Tan Heok Hui. 10 January 2014. Spotted reef crab at Pulau Tekukor. Singapore Biodiversity Records 2014: 4
  • Davison, G.W. H. and P. K. L. Ng and Ho Hua Chew, 2008. The Singapore Red Data Book: Threatened plants and animals of Singapore. Nature Society (Singapore). 285 pp.
  • Wee Y.C. and Peter K. L. Ng. 1994. A First Look at Biodiversity in Singapore. National Council on the Environment. 163pp.
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