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The Specimen

Baetidae (Blue-Winged Olives) Mayfly SpinnerBaetidae (Blue-Winged Olives) Mayfly SpinnerView 12 PicturesThis species is probably in Centroptilum, Cloeon, or Procloeon. I captured this spinner on the same night as a dun which is probably of the same species.
Region: Northeast
Collected Aug 9, 2006
Added Aug 11, 2006

The Discussion

TaxonAugust 12th, 2006, 2:58 am
Mercer Island, WA

Posts: 485
Jason-

The single detached intercalaries in the fore wing would limit the choices to the genera you suggest. The sharply pointed costal projection and single longitudinal vein in the hind wing probably narrow it to a single species. Unfortunately, none of the Baetidae hind wing illustrations to which I have access show either that sharply pointed of a projection or the single longitudinal vein, let alone in combination with one another.
Roger Rohrbeck
www.FlyfishingEntomology.com
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