Odontogomphus donnellyi is a species of dragonfly of the family Gomphidae, known as a pinchtail. It is endemic to north-eastern Queensland, Australia, where it inhabits rainforest streams. It is a medium-sized and slender dragonfly with black and greenish-yellow markings.
Odontogomphus donnellyi is the only known species in the genus Odontogomphus.
Etymology The genus name Odontogomphus is derived from the Greek ὀδών (odōn, "tooth"), combined with Gomphus, a genus name derived from the Greek γόμφος (gomphos, "peg" or "nail"). The name refers to tooth-like projections near the tip of the abdomen.
In 1991, Tony Watson named this species donnellyi, an eponym honouring T. W. Donnelly (1932–2025), a geologist and odonatologist who collected the original specimens.
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See also List of Odonata species of Australia
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