Podopteryx selysi

{{Short description|Species of damselfly}}

{{Speciesbox

| name = Treehole flatwing

| image = Treehole Flatwing f7 3640.jpg

| image_caption = Female, north Queensland

| status = LC

| status_system = IUCN3.1

| status_ref = {{cite iucn |author=Dow, R.A. |year=2020 |title=Podopteryx selysi |amends=2017 |page=e.T87532918A176958418 |doi=10.2305/IUCN.UK.2020-3.RLTS.T87532918A176958418.en |access-date=20 November 2021}}

| taxon = Podopteryx selysi

| authority = (Förster, 1899){{Cite journal|last=Förster|first=G.|date=1899|title=Contributions à la faune odonatologique Indo-Australe|url=https://www.biodiversitylibrary.org/page/35620959|journal=Annales de la Société Entomologique de Belgique (Comptes-rendus)|language=fr|volume=43|pages=63–72 [70]}}

| range_map = Podopteryx selysi distribution map.svg

}}

Podopteryx selysi is a species of Australian damselfly in the family Argiolestidae,{{Cite web|url=https://biodiversity.org.au/afd/taxa/Podopteryx_selysi |title=Species Podopteryx selysi (Förster, 1899)|date=2012|website=Australian Faunal Directory|publisher=Australian Biological Resources Study|access-date=14 April 2017}}

commonly known as a treehole flatwing.{{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=58}}

It can be found in coastal northern Australia and New Guinea, where its larvae live in water-filled holes in tree trunks in rainforest.{{cite book|title=Identification Guide to the Australian Odonata|last2=Endersby|first2=Ian|date=2009|publisher=Department of Environment, Climate Change and Water NSW|isbn=978-1-74232-475-3|pages=233|last1=Theischinger|first1=Gunther|url=http://www.environment.nsw.gov.au/resources/publications/09730AustOdonata.pdf}}

Podopteryx selysi is a very large damselfly, black-metallic in colour with white to pink markings on its head and body.

Like other members of the family Argiolestidae, it rests with its wings outspread.{{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}}

Unusually, and possibly uniquely for a damselfly, the hindwings of Podopteryx selysi are longer than its forewings. For other damselflies, forewings are usually marginally longer than hindwings.