Blue Winged Olive

(Baetidae Baetis)

...Several nymphs -- live & otherwise...

[image of nymph] [image of nymph]

(body length approx 0.5 cm)

BWO adults...

[image of subimago] [image of subimago]

(body length approx 0.5 cm)

This is a subimago photographed a few hours after hatching.

[image of spinner] [image of spinner]

And... the spinner above was photographed the next day.

Baetis hatch on the McKenzie, and most Oregon rivers, throughout the season, particularly in the early spring and late fall (this one was caught in early November). The body length on this particular one was exactly the length of a #20 hook.

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The McKenzie Page
last update: October 27, 1999

# dmason@zebu.uoregon.edu