Australian emerald

{{short description|Species of dragonfly}}

{{Speciesbox

|name=Hemicordulia australiae

|image=Sydney dragonflies mating Victoria Park pond 4.jpg

|image_caption=

|status=LC

|status_system=IUCN3.1

|status_ref={{cite iucn |author=Rowe, R. |author2=Marinov, M. |date=2020 |title=Hemicordulia australiae |volume=2020 |page=e.T163871A83376811 |doi=10.2305/IUCN.UK.2020-1.RLTS.T163871A83376811.en |access-date=20 November 2021}}

|taxon=Hemicordulia australiae

|authority=(Rambur, 1842){{Cite book|url=http://gallica.bnf.fr/ark:/12148/bpt6k61025298/f168.image|title=Histoire naturelle des insectes. Névroptères|language=fr|last=Rambur|first=Jules|publisher=Librairie Encyclopédique de Roret|year=1842|location=Paris|pages=534 [146]|via=Gallica}}

|range_map=Hemicordulia australiae distribution map.svg

}}

The Australian emerald (Hemicordulia australiae) is a species of dragonfly in the family Corduliidae.{{Cite web|url=https://biodiversity.org.au/afd/taxa/Hemicordulia_australiae|title=Species Hemicordulia australiae (Rambur, 1842)|date=2012|website=Australian Faunal Directory|publisher=Australian Biological Resources Study|access-date=28 January 2017}}

It can be found in Australia,{{cite web |url=http://www.ecology-solutions.com.au/vic_dragonflies/H_australiae.htm |title=Victorian Dragonflies |website=www.ecology-solutions.com.au |access-date=6 June 2022 |archive-url=https://web.archive.org/web/20050713050628/http://www.ecology-solutions.com.au/vic_dragonflies/H_australiae.htm |archive-date=13 July 2005 |url-status=dead}}

Lord Howe Island, Norfolk Island, Lesser Sunda Islands and New Zealand.{{Cite book|title=The Complete Field Guide to Dragonflies of Australia|last1=Theischinger|first1=Günther|last2=Hawking|first2=John|publisher=CSIRO Publishing|year=2006|isbn=978-0-64309-073-6|location=Collingwood, Victoria, Australia|pages=244}}

It is a small to medium-sized, long-legged dragonfly coloured black-metallic and yellow.

In both males and females the inboard edge of the hindwing is rounded.{{Cite book|title=The Australian Dragonflies: A Guide to the Identification, Distributions and Habitats of Australian Odonata|last1=Watson|first1=J.A.L.|last2=Theischinger|first2=G.|last3=Abbey|first3=H.M.|publisher=CSIRO|year=1991|isbn=0643051368|location=Melbourne}}

The Australian emerald appears similar to the tau emerald (Hemicordulia tau).