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

Keywords:

• Mayfly
• colour
• origin
• Isonychia (I.) fuscimarginata sp. n.
• Hainan Province

Acknowledgements

We would like to express our gratitude to Ms Xiao-Fang Chen and Mr Xu-Hong-Yi Zheng for their contribution in collecting the specimens used in this study. We also would like to express our sincere gratitude to the Hainan Tropical Rainforest National Park Administration for providing us permission to collect specimens and other scientific research in the park.

Disclosure statement

The authors declare no conflict of interest.

Additional information

Funding

This research was funded by the National Natural Science Foundation of China (grant number: 31750002 and 32070475), Graduate Student Scientific Research Innovation Projects in Jiangsu Province (grant number: 181200003023138) and by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).