A new nearctic Paracloeodes (Ephemeroptera : baetidae)

摘要

Paracloeodes fleeki, new species, is described from larvae taken from sand substrates of medium sized streams in the southern outer Piedmont ecoregion of North Carolina. The new species differs from the closely related and parapatric P. minutus in having a medial lobe of the labial palp that is less rounded, being both distally non protuberant from its base and distomedially more angulate. Relatively larger gills are also diagnostic of the new species; however, to a large degree, the color pattern displayed by the new species is encompassed by the extensive pattern variability found in the ubiquitous and widespread P. minutus.