Drunella	Fore femora broad with teeth on anterior margins, if not, head and thorax with paired dorsal tubercles.	Terminal segment of claspers 2x as long as broad.
Drunella coloradensis (Colorado Mayfly; Dark Olive Dun; Lesser Green Drake; Light Slate-winged Olive; Autumn Green Drake; Slate-winged Olive; Small Western Green Drake; Western Green Drake; Dark Brown Spinner. )	larva (nymph) Copyright © 2011 Bob Newell
	Abdomen dark olive to brownish black; thorax a shade lighter; no head projections; pointed abdominal tubercles, tiny compared to grandis or spinifera; femurs with bumps; gills all similar in size; dark tail band mid-length.	Body dark olive brown; wings dark gray; 3 tails; length 12-13 mm.; emerges Jul 20 - Aug 10.
Drunella doddsii (Dark Blue-winged Red Quill; Ginger Quill; Green Drake; Western Green Drake. )	mature larva (nymph) Copyright © 2011 Jason Neuswanger	subimago (dun) - male Copyright © 2011 Jason Neuswanger
	Body flattened; abdomen yellowish brown, w/o tibercles; thorax often lighter; head w/incomplete frontal shelf; ring of fine hairs encircling underside of abdomen; gills of similar size starting on seg. 3 .	Body: reddish to dark olive brown Wings: medium gray Length: 13 mm. Tails: 3 Emergence: Jul 10-30.
Drunella flavilinea (Flav; Lesser Green Drake; Slate-winged Olive; Slate-winged Olive Dun; Blue-winged Olive Dun; Dark Olive Spinner; Western Slate Olive Dun; Western Green Drake; Small Western Green Drake; Dark Rusty Spinner; Dark Olive Spinner. )		subimago (dun) - male Copyright © 2006 Arlen Thomason imago (spinner) - male Copyright © 2006 Arlen Thomason
	Abdomen dark olive to brownish black; thorax a shade lighter; no head projections; pointed abdominal tubercles, tiny compared to grandis or spinifera; femurs with bumps; gills are all similar in size; dark tail band mid-length.	Body dark olive; wings medium gray; length 7-10 mm.; 3 tails; emerges Jul 20 - Aug 10.
Drunella grandis flavitincta (Western Green Drake. )	nymph Copyright © 2009 Roger Rohrbeck
Drunella grandis ingens (Western Green Drake)	larva (nymph) Copyright © 2007 Bob Newell	subimago (dun) - male Copyright © 2010 Bob Newell imago (spinner) - female Copyright © 2010 Bob Newell
Drunella pelosa	nymph Copyright © 2011 Bob Newell
	Zebra-like black and white color pattern; pad of fine hairs on underside of abdominal segments 3-8; fringes of long, fine hairs on legs, tails, and body.	.
Drunella spinifera (Small Western Green Drake. )	nymph Copyright © 2011 Joseph Fortier	subimago (dun) - female Copyright © 2007 Bob Newell
	Femora of front legs very broad, but don't have bumps on front edge; long sharp tubercles on back of head; abdominal tubercles 8-9 more than twice as long as 2-7.	Body dark reddish brown; wings reddish brown; 3 tails; emerges Aug - Sep, late afternoon - early evening.

State of Washington distribution is based on:
Mayflies (Ephemeroptera) of the far western United States (Part I: Washington) by M. D. Meyer & W. P. McCafferty,
and augmented by A DNA Barcode Library for North American Ephemeroptera: etc. by Webb, Jacobus, Funk, et. al.