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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Pisciforma » Small Minnow Mayflies (Baetidae) » Baetis » Baetis tricaudatus
Photo#401208
Male Blue Winged Olive (Baetis ???) Madison River Montana April 2010 - Baetis tricaudatus - male
Copyright © 2010 Colin (Sandy) Pittendrigh

Male Blue Winged Olive (Baetis ???) Madison River Montana April 2010 - Baetis tricaudatus - Male
Bozeman, MT, Gallatin County, Montana, USA
April 20, 2010
Size: Small. Perhaps 3/16" long
I have a bunch more of these.
This was (I think) a male.
The females had smaller eyes and more subtle coloring
tag · login or register to post comments
Contributed by Colin (Sandy) Pittendrigh on 27 May, 2010 - 6:20am
Last updated 25 June, 2010 - 8:56pm

Moved
Moved from Mayflies.
Moved per Lloyd Gonzales comment. Although it is difficult-to-impossible to offer an ID of photos of many baetid subimagos, I would guess that this is Baetis tricaudatus based on the overall appearance and early collection date.
… tom murray, 25 June, 2010 - 8:56pm login or register to post comments

 
RE> "Baetis tricaudatus"
Baetis are important to Montana fly fishermen (like me) because they
hatch in great numbers both spring and fall (April/May and October/November).
And because the fish take notice, and feed prolifically.

So here is my question: if it is baetis tricaudatus that
hatches in spring, in the Beartrap Canyon of the Madison River,
for instance (the photo above, plus they always look the same from
year to year) is it or would it be the same species that hatches
again in fall?

Or are there spring hatching species and fall hatching species?
… Colin (Sandy) Pittendrigh, 26 June, 2010 - 7:00am login or register to post comments

 
Probably a different fall species
I could be wrong since I'm not a mayfly expert, but there are plenty of different species that have a very similar appearance.
… tom murray, 26 June, 2010 - 7:25am login or register to post comments

Moved
Moved from ID Request.
… Brad Barnd, 19 June, 2010 - 7:47pm login or register to post comments

Hi Sandy
Welcome to Bugguide. :)
… Lynette Elliott, 27 May, 2010 - 9:54am login or register to post comments

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