A New Species of the Genus Neoephemera McDunnough from China (Ephemeroptera: Neoephemeridae)

The mature larva of a new species, Neoephemera projecta sp. n., from China is described in detail. It represents a new country record of the genus for China. The discovery shows that the genus Neoephemera McDunnough has a more extensive Holarctic distribution than previously known. Ecological vicariance instead of geographic isolation is therefore favoured as presumed cause of the origin of the three neoephemerid genera.