About Syntonarcha iriastis Meyrick, 1890
Syntonarcha iriastis is a moth species that belongs to the Crambidae family. It was first described by Edward Meyrick in 1890. This species is found in the western Pacific region, including locations such as Hong Kong and New Caledonia, as well as most of Australia. Within Australia, it has been recorded in Western Australia, the Northern Territory, Queensland, and New South Wales. Male individuals of this species produce ultrasonic sound by rubbing their genitalia against one of their sternites. Researchers hypothesize that this ultrasonic sound is used to attract mates over long distances. The wingspan of Syntonarcha iriastis is approximately 25 mm. Its forewings are light brownish ochreous, while its hindwings are whitish.
