WA Hatch Chart Upgrade

Teenage Entomologist

Gotta love the pteronarcys.
That has to be one of the best hatch charts I've ever seen, and I live in California! I have a question for you also. This spring in May, I was on the lower Sacramento River and I found a dozen Claassenia sabulosa's under some rocks in a very shallow rifle. They were fully mature, and I hatched them out of my aquarium in one week. Why did they hatch May and not in the fall? And also a guy I know found the giant female and short winged male nymphs under rocks by the shore, not hatching, because it was the middle of the day, but almost as if they were feeding on something.Explain that.
 

Taxon

Active Member
WFF Moderator
Hi TE-
That has to be one of the best hatch charts I've ever seen, and I live in California!
Thank you.
I have a question for you also. This spring in May, I was on the lower Sacramento River and I found a dozen Claassenia sabulosa's under some rocks in a very shallow rifle. They were fully mature, and I hatched them out of my aquarium in one week. Why did they hatch May and not in the fall?
Claassenia sabulosa have an extended emergence period, which runs from early-Jun to mid-Nov, depending on where they are. If the water in your aquarium was warmer than the water from which you collected them, their emergence would be accelerated.
And also a guy I know found the giant female and short winged male nymphs under rocks by the shore, not hatching, because it was the middle of the day, but almost as if they were feeding on something. Explain that.
The males hide under rocks, etc. by day, and venture out on search of females after dark.
 

Taxon

Active Member
WFF Moderator
Hi TE-

Taxon, you are a genius. I just want to tell you that I'm only 14. Thanks again.
Ha, don't I wish. ;) Age apart, you obviously share my enthusiasm for aquatic insects.
My favorite insect, zee pteronarcys californica.
Yes, as the largest stonefly, they are a favorite of trout as well.
 

astrofisher

Clear Skies
Recently, I was looking at the previous hatch chart and was thinking how great it was to have that resource available. :)
Thanks for the upgrade.
 

Taxon

Active Member
WFF Moderator
Richard Torres, Jim Fricklin, and astrofisher-

Thanks for the kind words.
 

Builder

Member
Roger,
What a great resource!
May I have permission to share your work with a couple of new fly fisher's?
Thank you,
Chris
Missoula
 

Taxon

Active Member
WFF Moderator
Hi Chris-
Roger,
What a great resource!
May I have permission to share your work with a couple of new fly fisher's?
Thank you,
Chris
Missoula
Thanks. Please PM me with your full name, email address, and the specifics of what you propose doing with my work. I will respond via email to your request.
 

jwg

Active Member
Roger
I just noticed the hook sizes to the right.
what a good idea and a great chart
thanks
Jay
 

Taxon

Active Member
WFF Moderator
Roger
I just noticed the hook sizes to the right.
what a good idea and a great chart
thanks
Jay
Thanks, Jay-

Including hook sizes on a hatch chart was certainly not my idea. The first time I recall seeing it was on a hatch chart developed by Larry Graham for the Yakima River. Larry was a Yakima River fly fishing guide, who was also widely recognized for his expertise in aquatic entomology, and developed the highly effective "Lightning Bug" fly pattern. In any event, I have simply attempted to incorporate the good ideas of many others into a single hatch chart for WA.
 

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