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Syntonarcha iriastis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Crambidae
Genus:	Syntonarcha
Species:	S. iriastis
Binomial name
Syntonarcha iriastis Meyrick, 1890

Syntonarcha iriastis is a moth in the family Crambidae. It was described by Edward Meyrick in 1890. It is found in the western Pacific, including Hong Kong, New Caledonia and most of Australia, where it has been recorded from Western Australia, the Northern Territory, Queensland and New South Wales.

Males of the species produce an ultrasonic sound by rubbing their genitalia against one of their sternites. It is hypothesized that this is used to attract mates over long distances.

The wingspan is about 25 mm. The forewings are light brownish ochreous. The hindwings are whitish.

References

1. Nuss, M.; et al. (2003–2017). "GlobIZ search". Global Information System on Pyraloidea. Retrieved January 15, 2018.
2. Lepidoptera Larvae of Australia
3. Gwynne, Darryl T.; Edwards, E.D. (December 1986). "Ultrasound production by genital stridulation in Syntonarcha iriastis (Lepidoptera: Pyralidae): long-distance signalling by male moths?". Zoological Journal of the Linnean Society. 88 (4): 363–376. doi:10.1111/j.1096-3642.1986.tb02253.x.
4. Proceedings of the Linnean Society of New South Wales. (2) 4 (4): 1107

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