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Petalura ingentissima. Petalura ingentissima, the giant petaltail, has been described as the world's largest dragonfly, with a wingspan of 160 mm. [3] It is found in Queensland, Australia. [4] Dr R.J. Tillyard described the giant petaltail in 1908. [2] Its species name is derived from the Latin adjective ingens "huge".
Tetracanthagyna vittata McLachlan, 1898[2] The giant hawker (Tetracanthagyna plagiata) or the gigantic riverhawker, is a species of dragonfly in the family Aeshnidae. It is found throughout Sundaland, having been recorded on Thailand, Peninsular Malaysia, Singapore, Sumatra, and Borneo. It is the type species for the genus Tetracanthagyna.
Meganeura. Meganeura is a genus of extinct insects from the Late Carboniferous (approximately 300 million years ago). It is a member of the extinct order Meganisoptera, which are closely related to and resemble dragonflies and damselflies (with dragonflies, damselflies and meganisopterans being part of the broader group Odonatoptera).
Common worldwide or nearly worldwide genera are Aeshna and Anax. Anax includes some of the largest dragonflies, including the North American A. walsinghami, Hawaiian A. strenuus, European A. imperator and A. immaculifrons, and African A. tristis, but these are all exceeded by another member of the family, the Asian Tetracanthagyna plagiata, which by wingspan and weight is the world's largest ...
This species is one the world's largest living dragonflies and the largest in the United States. [3] It typically has a wingspan of 127–143 mm (5.0–5.6 in), [ 4 ] but has been verified to reach up to 152 mm (6.0 in); [ 5 ] reports of considerably greater sizes are unverified and highly questionable. [ 6 ]
Petalura gigantea, the giant dragonfly [2] or south-eastern petaltail, [3] is a species of dragonfly in the family Petaluridae from southeastern Australia. [4] Males have body length of 6–7.5 cm (2.4–3.0 in) and a wingspan up to 11 cm (4.3 in), while females have body length of 8–9 cm (3.1–3.5 in) and a wingspan up to 12.5 cm (4.9 in).
The emperor dragonfly is a large and bulky species. It is 73–82 mm (2.9–3.2 in) long, with average being 78 mm (3.1 in) and males growing larger than females. [2][6] The average wingspan is 104 mm (4.1 in). [6] When they first emerge, both sexes appear pale green with brown markings. The legs are brown with a yellow like base.
Petaluridae. The petaltails of the family Petaluridae are among the most ancient of the extant true dragonflies (infraorder Anisoptera), [2] having fossil members from as early as the Jurassic, over 150 million years ago. A 2024 molecular phylogeny found that the petaltails comprise two clades, a Gondwanan clade and a Laurasian clade.