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Mayfly Species Labiobaetis propinquus (Blue-Winged Olive)

This was the last species remaining in the the genus Pseudocloeon, a name from older nomenclatures familiar to many anglers. This species lacks hind-wings.  

Where & When


Regions: Midwest, West

Time Of Year (?): Main broods in July and October


Nymph Biology


Current Speed: Fast or slow; best in slow

Substrate: Variety; best in weeds

Fred Arbona writes in Mayflies, the Angler, and the Trout that this species is found in many habitats but is only abundant in slow, weedy streams.

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