Black Quills and Blue Quills
This common name refers to only one genus.
These are pretty much always called Black Quills and Blue Quills.
mayflies do not generate superhatches, but their medium-large size and other properties make them a relevant part of the early season.
The information below was mostly discovered in Leptophlebia cupida
, the most important species, but it is not known to differ in the others.