**Mayfly Species Paraleptophlebia helena (Mahogany Dun)**

Mayflies

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Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Leptophlebiidae (Blue Quills and Mahogany Duns)

» Genus Paraleptophlebia (Blue Quills and Mahogany Duns)

» Species helena (Mahogany Dun)

Common Name

Match	Common Name
	Mahogany Dun

This large species of Paraleptophlebia is one of the tusked group. Records indicate it is endemic (Endemic: where found; native to; belonging exclusively to or confined to a particular place) to California where it fills the niche taken by Paraleptophlebia bicornuta in neighboring states. It usually hatches with the more common and very similar looking duns of Paraleptophlebia debilis.

Where & When

Region: West

Time Of Year (?): Fall

This species is locally important in California only.

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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.

Endemic: where found; native to; belonging exclusively to or confined to a particular place

Useful References:

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

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