- Common name
- The Hendrickson; The Red Quill; The Hendrickson Spinner Fall
- Tied fly
- Hendrickson; Flick's Red Quill; Lunn's Particular
Mayflies in this genus have long intersegmental setae on their cerci that extend laterally and may or may not have whorls of spines at the end of each segment of their cerci. Their maxillary palps are well-developed.
Image of the intersegmental setae.