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  Haberma nanum Ng & Schubart, 2002
  Family Name : Sesarmidae

  Taxonomic Group : Invertebrates (Crustacean, Crab and Prawn)

  Common Names : Grasping Dwarf Sesarmid

Grasping Dwarf Sesarmid
  • Ecology, Habitat & Location
    • Ecological Notes :
      With semi-terrestrial habits, it scurries round mangroves and mud-lobster mounds in mangroves and is a scavenger.
      Habitats :
      Distribution :
      Known from various mangroves in northern Singapore as well as some sites in Malaysia.
      Nature Areas :
      Pulau Tekong, Pulau Ubin
  • Conservation
    • Trends & Threats :
      Loss of mangroves would be the main threat faced by this strange species.
      Scientific Interest & Potential Value :
      This species was only discovered in 2002; the animal had long been mistaken to be juveniles of the better known Episesarma species but when some were found to carry eggs and closely examined, the peculiar features of this new genus and new species became unknown. The crabs are apparently a paedomorphic species (i.e. looking like juveniles but able to reproduce). Peculiar also is that males have the first two pairs of legs each with a hook-like structure that apparently helps to grasp objects but females do not.
      Conservation Notes :
      Conservation of intact mangroves, especially those on the north coast, Pulau Ubin and Pulau Tekong.
  • Status
    • Singapore Red Data Book 2008 status :
      Vulnerable (VU)
  • References
    • Davison, G.W.H., Ng, P.K.L. & Ho, H.C (Eds.). 2008. The Singapore Red Data Book (2nd Edition). Singapore: Nature Society (Singapore). 285pp 

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