Idionyx gomantakensis,[1] commonly known as Goan shadow dancer,[2] is a species of dragonfly in the family Synthemistidae.

It is known only from the Western Ghats of India.

[3] This species was first sighted at Collem, Goa by Parag Rangnekar and Rohan Naik during a survey of dragonflies conducted by them under the banner of the Mineral Foundation of Goa, and supported by the Department of Science and Technology.

[4] This new species can be differentiated from other species of Idionyx by long and slender cerci and epiproct, absence of teeth in the basal half of the cerci, and a tuft of golden hairs at the end of the lateral lobes of the epiproct.

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