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The Specimen

Maccaffertium modestum (Cream Cahill) Mayfly SpinnerMaccaffertium modestum (Cream Cahill) Mayfly Spinner View 3 PicturesThis one was collected in in association with this male. It looks quite different, but that's often the case between spinner genders.
Collected August 5, 2004 from unknown in Wisconsin
Added to Troutnut.com by on January 19, 2006

The Discussion

GONZOOctober 28th, 2008, 12:53 pm
Site Editor
"Bear Swamp," PA

Posts: 1681
This female has abdominal markings (spiracular dots and lines on posterior margins) and cross veins that are not crowded in the bulla region of the wing. This seems consistent with some M. modestum, and I'm pretty sure that this female is the same species as the male collected on the same day (#295).

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