**Mayfly Species Centroptilum conturbatum (Tiny Sulphur Dun)**

Mayflies

Caddisflies

Stoneflies

Taxonomic Navigation -?-

Kingdom Animalia (Animals)

» Phylum Arthropoda (Arthropods)

» Class Insecta (Insects)

» Order Ephemeroptera (Mayflies)

» Family Baetidae (Blue-Winged Olives)

» Genus Centroptilum (Tiny Sulphur Duns)

» Species conturbatum (Tiny Sulphur Dun)

Common Names

Match	Common Name
	Tiny Sulphur Dun
	Blue-Winged Olive
	Gray-Winged Olive Quill

Pictures Below ↓

Where & When

Region: West

Time Of Year (?): June to October

Pictures of 1 Mayfly Specimen in the Species Centroptilum conturbatum:

Centroptilum conturbatum (Tiny Sulphur Dun) Mayfly Nymph

View 2 PicturesA moderately rare mayfly perhaps because the nymphs are fragile that nymphs are usually damaged in collection making identification more difficult.

Collected July 12, 2007 from Bowman Lake in Montana
Added to Troutnut.com by Bnewell on June 26, 2011

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Jargon Defined:

Nymphs: The juvenile, underwater stages of mayflies, stoneflies, dragonflies, and damselflies and other aquatic insects whose juvenile stages are covered by hard exoskeletons. The word can also refer to the fishing flies which imitate these creatures, in which case it is used as a blanket term for flies imitating any underwater stage of an invertebrate (except for crayfish and leeches).

Useful References:

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