Tau emerald

The tau emerald (Hemicordulia tau) is a species of dragonfly in the family Corduliidae.[3] It is found in all parts of Australia except northern Queensland and north-western Western Australia.[4] The species was first described by Edmond de Sélys Longchamps in 1871.[2]

Tau emerald
Male
Female

Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Odonata
Infraorder: Anisoptera
Family: Corduliidae
Genus: Hemicordulia
Species:
H. tau
Binomial name
Hemicordulia tau
(Selys, 1871)[2]

The tau emerald is a medium-sized, black and yellow dragonfly with long legs,[5] reaching a body length of about 50 mm.[6] In both males and females the inboard edge of the hindwing is rounded.[5]

  • Male in flight
  • Female
  • Female
  • Male
  • Mating pair
  • Female wings
  • Male wings

References
  1. Dow, R.A. (2017). "Hemicordulia tau". IUCN Red List of Threatened Species. 2017: e.T83306426A83375516. doi:10.2305/IUCN.UK.2017-1.RLTS.T83306426A83375516.en.
  2. Selys-Longchamps, Edmond (1871). "Synopsis des Cordulines". Bulletin de la Classe des Science, Académie Royale de Belgique. 2 (in French). 31: 256 – via Biodiversity Heritage Library.
  3. "Species Hemicordulia tau (Selys, 1871)". Australian Faunal Directory. Australian Biological Resources Study. 2012. Retrieved 28 January 2017.
  4. Günther Theischinger and John Hawking (2006). The Complete Field Guide To Dragonflies Of Australia. Collingwood, Victoria: CSIRO Publishing. p. 249.
  5. Watson, J.A.L.; Theischinger, G.; Abbey, H.M. (1991). The Australian Dragonflies: A Guide to the Identification, Distributions and Habitats of Australian Odonata. Melbourne: CSIRO. ISBN 0643051368.
  6. http://www.brisbaneinsects.com/brisbane_dragons/TMark.htm
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