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  Papilio prexaspes prexaspes (C. & R. Felder, 1865)
  Family Name : Papilionidae

  Taxonomic Group : Invertebrates (Butterfly and Moth)

  Common Names : Blue Helen

 
Blue Helen
  • Description
    • Description :
      Has a white patch on the hindwing and blue lunules along the hindwing margins.
  • Ecology, Habitat & Location
    • Ecological Notes :
      It is essentially a forest butterfly and has not been seen outside the nature reserves in Singapore. It has a fast and erratic flight and is often seen feeding at the flowers of Saraca spp. within the nature reserves. Males can often be found puddling at damp muddy spots along footpaths and forest streams.
      Habitats :
      Forest
      Distribution :
      Widely distributed from the Andaman Islands to South East Asia.
      Nature Reserves :
      Bukit Timah Nature Reserve, Central Catchment Nature Reserve
  • Conservation
    • Trends & Threats :
      Loss of habitat and host plants. Small population within the nature reserves.
      Scientific Interest & Potential Value :
      This species was not observed in Singapore by the early authors and was first seen in the early 1990s. It has been observed within the nature reserves (primarily the Central Catchment Nature Reserve) and appears to be seasonal.
      Conservation Notes :
      Retention of the nature reserves and cultivation of its host plant, currently believed to be a species of Zanthoxylum.
  • Status
    • Species Status :
      Native
      Conservation Status :
      Rare
      Singapore Red Data Book 2008 status :
      Vulnerable (VU)
  • References
    • Butterfly Circle. http://www.butterflycircle.com/ 
      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 
      Khew, S.K. 2010. A field guide to the butterflies of Singapore. Singapore: Ink On Paper Communications Pte Ltd. 342pp 

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