Cream Duns

Mayflies

Caddisflies

Stoneflies

Scientific Names

Match	Scientific Name
	Anthopotamus distinctus
	Maccaffertium ithaca

Like most common names, "Cream Dun" can refer to more than one taxon. They're previewed below, along with 2 specimens. For more detail click through to the scientific names.

Mayfly Species Anthopotamus distinctus

These are often called Cream Duns.

Mayfly Species Maccaffertium ithaca

These are very rarely called Cream Duns.

Maccaffertium ithaca (Light Cahill) Mayfly Nymph

View 9 PicturesThis specimen seems to be of the same species as a dun I photographed which emerged from another nymph in the same sample.

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

Female Maccaffertium ithaca (Light Cahill) Mayfly Dun

View 10 PicturesThis female looks very much like a male I collected a few hundred miles away a few days later, so I'm guessing it's the same species, which I believe is Maccaffertium mediopunctatum.

Collected May 23, 2007 from in
Added to Troutnut.com by on June 4, 2007

See 2 more specimens...

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.

Nymph: 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).