Blue-winged Olives
Baetis
Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.
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As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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Al514 on Jun 14, 2008June 14th, 2008, 5:52 am EDT
I went down to the Delaware for the first time yesterday and I am concerned about not carrying Didymo to streams in my hometown. What are some effective ways of cleaning your waders/boots?
Al514 on Jun 14, 2008June 14th, 2008, 6:04 am EDT
Nevermind, I just googled how to do it - freezing everything seems like the easiest way.
GONZO on Jun 14, 2008June 14th, 2008, 6:37 am EDT
Artie,
I applaud your concern. For those who don't find freezing convenient, I believe the EPA suggests soaking in a 2% solution of bleach or a 5% solution of either dishwashing detergent or salt for at least a minute. At the very least, thorough drying (an additional 48 hours after the material feels dry) is suggested.
I applaud your concern. For those who don't find freezing convenient, I believe the EPA suggests soaking in a 2% solution of bleach or a 5% solution of either dishwashing detergent or salt for at least a minute. At the very least, thorough drying (an additional 48 hours after the material feels dry) is suggested.
Martinlf on Jun 16, 2008June 16th, 2008, 9:42 am EDT
Good for you Artie. I notice that some of the new boots by Simms and others are designed to be easier to clean in order to help stop the spread of invasives. Thanks for this post; it will help keep solutions on the radar for us.
"He spread them a yard and a half. 'And every one that got away is this big.'"
--Fred Chappell
--Fred Chappell
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