Petalura gigantea, the giant dragonfly or south-eastern peteltail, is one of the world's largest dragonflies, with the males having an abdomen 6 - 7.5 cm long and a wingspan up to 11 cm, while females have an abdomen 8 - 9.5 cm long and a wingspan up to 12.5 cm.
The giant dragonfly occurs along the east coast of NSW from the Victorian border to northern NSW, and is not found west of the Great Dividing Range. There are known occurrences in the Blue Mountains and Southern Highlands, in the Clarence River catchment, and on a few coastal swamps from north of Grafton to Nadgee in the south. It is unusual not only in size, but also in having predominantly terrestrial habits at the larval stage. The giant dragonfly is listed as endangered under the NSW Threatened Species Conservation Act.
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- Leach, William (1815). The zoological miscellany : being descriptions of new, or interesting animals. London: Printed by B. McMillan for E. Nodder & Son. p. 96. doi:10.5962/bhl.title.41372 – via Biodiversity Heritage Library.
- "Archived copy". Archived from the original on 2007-09-05. Retrieved 2007-06-07.CS1 maint: Archived copy as title (link)
- "Species Petalura gigantea Leach, 1815". Australian Faunal Directory. Australian Biological Resources Study. 2012. Retrieved 19 December 2017.