Mayfly Genus Leucrocuta

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

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

» Genus Leucrocuta

Species in Leucrocuta
Leucrocuta aphroditePale Evening Dun	0	0
Leucrocuta hebeLittle Yellow Quill	9	51
Leucrocuta juno	0	0
Leucrocuta minerva	0	0

6 species aren't included.

Pictures Below ↓

The species of this genus are relatively unimportant, but Leucrocuta hebe and Leucrocuta aphrodite may produce fishable hatches. They have the same general biology as Heptagenia.

Pictures of 9 Mayfly Specimens in the Genus Leucrocuta:

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

Leucrocuta hebe (Little Yellow Quill) Mayfly Nymph

View 3 PicturesThis is a very early instar (Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.).

Collected February 7, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 25, 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:

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.

Instar: Many invertebrates molt through dozens of progressively larger and better-developed stages as they grow. Each of these stages is known as an instar. Hard-bodied nymphs typically molt through more instars than soft-bodied larvae.

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.