A new mayfly species of Isonychia Eaton, 1871 (Ephemeroptera: Isonychiidae) with colourful wings from southern China

Abstract

So far, species of the genus Isonychia Eaton, 1871 have been reported to have transparent or partially pigmented wings, particularly their hindwings. A new species, I. fuscimarginata sp. n., recently collected from southern China, shows a different case. Both its forewings and hindwings have striking reddish brown to chocolate margins and stripes. Besides that, the entirely dark brown forelegs, shortened but apically widened male penises, and the colour and spine patterns of nymphal gills are useful characters for identification. This new species enriches the colour pattern of the genus Isonychia and the family Isonychiidae.http://zoobank.org/urn:lsid:zoobank.org:act:38EE81E1-B900-4855-9B20-6BFF8AA7A8A2