Epeorus (Little Maryatt; Sulphur; Western Quill Gordon; Yellow Quill. ) | larva (nymph)
 Copyright © 2010 Joseph Fortier |
| imago (spinner) - male
 Copyright © 2001 Arlo Pelegrin |
|
Epeorus | Abdomen w/o paired dorsal tubercles; 2 tails. | 1st segment of fore tarsi equal to length of 2nd segment; heart-shaped femoral markings. |
Epeorus albertae (Gray-winged Pink Quill; Pink Albert; Pink Lady; Slate Cream Dun; Western Gray-winged Yellow Quill; Salmon Spinner. ) | | subimago (dun) - female
 Copyright © 2011 Bob Newell |
imago (spinner) - male
 Copyright © 2012 Ken Schneider |
subimago (dun) - female
 Copyright © Bob Newell |
|
Epeorus deceptivus (Light Blue Quill. ) | | |
| Abdomen light to dark chocolate brown; thorax medium olive brown; 1st gills extend forward under the thorax, but don't curve inward and overlap; blunt femoral flange; 2 tails. | Body gray or pale cream/olive; wings medium gray; length 9-11 mm.; 2 tails; emerges Jul - early Oct. |
Epeorus dulciana | | |
Epeorus grandis | larva (nymph)
 Copyright © 2006 Arlo Pelegrin | | |
| Body dark brown, gills w/purplish hue; dense row of dorsal hairs down the middle of abdomen; first/last pairs of gills extend under thorax and abdomen respectively and overlap to form a suction disk; 2 tails. | . |
Epeorus hesperus | | |
Epeorus longimanus (Coquette; Medium Blue Quill; Quill Gordon; Slate Brown Dun; Western Quill Gordon ; Red Quill Spinner. ) | | |
| Body brown w/darker markings; femora w/dark markings and blunt flange; extended 1st and last gills meet under body to form suction disks; 2 tails. | Body pale gray w/darker tegites; wings gray to dark slate; length 10-14 mm.; 2 tails: emerges mid-late Jul. |
Epeorus permagnus | | |