Family: Heptageniidae.
Description
At the imaginal stage, the combination of the number of forewing crossveins in the costal and subcostal fields, the male foretarsi proportions and genitalia will distinguish the genus Notonurus. Overall number of crossveins in the forewing reduced in number compared to other Heptageniidae and bordered with dark staining. Hindwings without marginal brown staining.
Kruger National Park © ExFmem, identified by Dr. Helen James
The genus Notonurus was in 1947 established by Crass, and the species was described as Notonurus cooperi:
http://www.ephemeroptera-galactica.com/ ... 47p124.pdf
https://www.researchgate.net/publicatio ... emeroptera
https://www.ru.ac.za/media/rhodesuniver ... iidae.html
https://www.researchgate.net/publicatio ... dyonurinae
http://www.ephemeroptera-galactica.com/ ... 13p979.pdf