Mayfly Species Paraleptophlebia bicornuta (Blue Quill)

This important Western species is one of the only mayflies outside the Ephemeridae family to possess large tusks on the front of its head. It is also the largest species of Paraleptophlebia, and probably the most important in the West.

The bicornuta action may be reinforced by simultaneous hatches of Paraleptophlebia debilis.  

Where & When

Region: West
Time Of Year (?): September through early November
Preferred Waters: Large rivers

Hatching Behavior

Time Of Day (?): Morning and afternoon
Habitat: Calm shallows of large rivers

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