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Updates from November 23, 2005

Closeup insects by Bnewell from the Flathead River in Montana

Maccaffertium terminatum Mayfly NymphMaccaffertium terminatum  Mayfly Nymph View 1 PicturesThis is a subspecies (Subspecies: Entomologists sometimes further divide a species into distinct groups called subspecies, which have two lower-case words on the end of their scientific name instead of one. The latter is the sub-species name. For example, Maccaffertium mexicanum mexicanum and Maccaffertium mexicanum integrum are two different subspecies of Maccaffertium mexicanum.) M. terminatum terminatum, formerly called Stenonema. Found mostly in larger rivers in western Montana. This is an immature nymph.
Collected November 23, 2005 from the Flathead River-lower in Montana
Added to Troutnut.com by Bnewell on June 26, 2011

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