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**Mayfly Genus Drunella (Blue-Winged Olives)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs)

» Genus Drunella (Blue-Winged Olives)

Species in Drunella
Drunella coloradensisSmall Western Green Drake	0	0
Drunella cornutaLarge Blue-Winged Olive	0	0
Drunella cornutellaSmall Blue-Winged Olive	0	0
Drunella doddsiiWestern Green Drake	0	0
Drunella flavilineaFlav	0	0
Drunella grandisWestern Green Drake	0	0
Drunella lataSmall Blue-Winged Olive	0	0
Drunella pelosa	0	0
Drunella spiniferaWestern Slate Olive Dun	0	0
Drunella tuberculata	0	0
Drunella walkeriLarge Blue-Winged Olive	0	0

1 species isn't included.

Common Name

Match	Common Name
	Blue-Winged Olives

Pictures Below ↓

This is page 5 of specimens of Drunella. Visit the main Drunella page for:

The behavior and habitat of Drunella.

Pictures of 51 Mayfly Specimens in the Genus Drunella:

Specimen Page:1...3 456

Drunella grandis (Western Green Drake) Mayfly Nymph

View 3 Pictures

Collected July 2, 2019 from the Gallatin River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Drunella doddsii (Western Green Drake) Mayfly Nymph

View 5 Pictures

Collected July 10, 2011 from Nome Creek in Alaska
Added to Troutnut.com by Troutnut on July 13, 2011

Drunella grandis (Western Green Drake) Mayfly Nymph

View 10 Pictures

Collected June 16, 2018 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 18, 2018

Female Drunella cornuta (Large Blue-Winged Olive) Mayfly Dun

View 4 Pictures

Collected May 29, 2007 from Brodhead Creek in Pennsylvania
Added to Troutnut.com by Troutnut on June 4, 2007

Drunella grandis (Western Green Drake) Mayfly Nymph

View 3 Pictures

Collected July 2, 2019 from the Gallatin River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Drunella coloradensis (Small Western Green Drake) Mayfly Nymph

View 6 Pictures

Collected August 4, 2020 from Green Lake Outlet in Idaho
Added to Troutnut.com by Troutnut on August 20, 2020

Drunella doddsii (Western Green Drake) Mayfly Nymph

View 4 Pictures

Collected July 17, 2011 from the Gulkana River in Alaska
Added to Troutnut.com by Troutnut on July 20, 2011

Male Drunella (Blue-Winged Olives) Mayfly Dun

View 3 Pictures

Collected July 7, 2019 from the Ruby River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019

Female Drunella grandis (Western Green Drake) Mayfly Dun

View 7 PicturesI didn't find a male spinner to associate with this one; I'm tentatively calling it grandis based on size alone. I found it floating down the surface of the Henry's Fork (the only one I saw that day, weeks after the hatch probably peaked) crippled by what appears to be a mass of eggs sticking out of its abdomen.

Collected August 1, 2020 from the Henry's Fork of the Snake River in Idaho
Added to Troutnut.com by Troutnut on August 18, 2020

Male Drunella coloradensis (Small Western Green Drake) Mayfly Spinner

View 9 PicturesThis spinner molted from this dun, or possibly one other dun I had in the same container that looked just like it.

Collected July 28, 2019 from Mystery Creek #199 in Washington
Added to Troutnut.com by Troutnut on July 30, 2019

Specimen Page:1...3 456

Jargon Defined:

Abdomen: The rear and usually the longest (ten-segmented in mayflies) portion of an insect's body, to which the tails are attached.

Dun: Mayflies have two adult stages. They first emerge from the water as duns (scientifically known as the subimago stage). They then molt into the spinner (imago) stage, in which they mate and die. Sometimes the word "dun" is confusingly used to refer to a brownish gray color in fly tying materials.

Spinner: There are two winged stages of adult mayflies. They emerge from the water as duns, molt on land (usually) into their fully mature stage, spinners. As spinners, they mate, lay eggs, and die.

Useful References:

Arbona, Fred Jr. 1989. Mayflies, the Angler, and the Trout. Nick Lyons Books.