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Sha Lo Tung Dragonfly Ecological Survey


Situated in the valley plains over 100 m above sea levels and occupying over 80 hectares of land, Sha Lo Tung consists of large stretches freshwater wetlands, which is a well-known habitat for dragonflies in Hong Kong. Under the government’s new conservation policy, Sha Lo Tung is also an ecological hotspot that is ranked second on a list of conservation areas that require increased efforts in conservation. Its ranking is second to Ramsar Wetlands.

Since 2009, we continually recorded the distribution and population of local dragonfly species, in order to monitor changes in the local environment. Over 70 species of dragonfly have been recorded to date.

2018
  • Ongoing
2017
  • Data being processed
2016
  • Total of 36 species of dragonfly recorded between June and November, including 2 uncommon species.
2015
  • Total of 33 species of dragonfly recorded between March and November, including 3 uncommon species.
2013
  • Total of 55 species of dragonflies recorded between March and November, including 5 uncommon species.
2012
  • Total of 58 species of dragonflies recorded between March and November, including 8 uncommon species.
2011
  • Total of 46 species of dragonflies recorded between March and November, including 4 uncommon species.
2010
  • Total of 54 species of dragonflies recorded between March and November, including 6 uncommon species.
2009
  • Ecological surveying of dragonflies in Sha Lo Tung begins. Total of 50 species of dragonflies recorded between April and October, including 5 uncommon species.
  • In July, the dragonfly species - White-tipped Grappletail (Heliogomphus retroflexus) was found in Hong Kong for the first time. It is a key protected animal species, and is listed under class II of the List of Wildlife under Special State Protection.
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Scarlet Dwarf (Nannophya pygmaea)
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White-tipped Grappletail (Heliogomphus retroflexus)
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