**Mayfly Species Leucrocuta hebe (Little Yellow Quill)**

Mayflies

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Heptageniidae (March Browns, Cahills, Quill Gordons)

» Genus Leucrocuta

» Species hebe (Little Yellow Quill)

Common Names

Match	Common Name
	Little Yellow Quill
	Pale Evening Dun
	Small Gray-Winged Yellow Quill
	Gray-Winged Yellow Quill

Pictures Below ↓

This widespread species produces more fishable hatches in the East and Midwest than any other species in the Heptagenia genus complex.

Where & When

Regions: East, Midwest

Time Of Year (?): Late May through October; best in early June

The best hatches are reported from the Upper Midwest.

Hatching Behavior

The duns emerge and fly away very quickly, making them usually pointless to imitate. Spinners are more likely to be relevant.

Pictures of 11 Mayfly Specimens in the Species Leucrocuta hebe:

Specimen Page:12

Female Leucrocuta hebe (Little Yellow Quill) Mayfly Dun

View 9 PicturesI found this dun on the same piece of stream as a similar spinner, probably of the same species.

Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006

Female Leucrocuta hebe (Little Yellow Quill) Mayfly Spinner

View 8 Pictures

Collected September 4, 2006 from Willowemoc Creek in New York
Added to Troutnut.com by Troutnut on October 3, 2006

Female Leucrocuta hebe (Little Yellow Quill) Mayfly Spinner

View 6 PicturesI found this spinner on the same piece of stream as a similar dun, probably of the same species.

Collected September 19, 2006 from Mystery Creek #43 in New York
Added to Troutnut.com by Troutnut on October 4, 2006

Specimen Page:12

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Jargon Defined:

Duns: 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.

Caucci, Al and Nastasi, Bob. 2004. Hatches II. The Lyons Press.

Knopp, Malcolm and Robert Cormier. 1997. Mayflies: An Angler's Study of Trout Water Ephemeroptera . The Lyons Press.

Leonard, Justin W. and Fannie A. Leonard. 1962. Mayflies of Michigan Trout Streams. Cranbrook Institute of Science.