Fly Fishing for Trout Home
User Password
or register.
Scientific name search:

> > Spinner Mayfly

JesseMay 13th, 2012, 8:44 pm
Posts: 378
Someone tell me (with understandable words) exactly what a mayfly spinner is!? I have always thought that it was a mayflies last life stage before it dies. But i have heard it's a separate mayfly from the actual; such as a march brown dun vs. a spinner, the mating stage, blah blah blah and more. Whats up here guys i want to know?
Most of us fish our whole lives..not knowing its not the fish that we are after.
EntomanMay 13th, 2012, 8:57 pm
Northern CA & ID

Posts: 2604
Hi Jess,

When mayflies hatch, the duns fly off the water to find a safe place to molt into fully mature adults or spinners. This usually takes a day or two. They then come back to mate and lay their eggs. They die soon after with many ending up in the water. The spinner looks just like the dun but usually shinier, perhaps a little darker, and with clearer wings. Caddis and stoneflies don't molt after hatching.
"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman
KonchuMay 13th, 2012, 9:01 pm
Site Editor

Posts: 505
the usual mayfly life cycle goes like this:

egg (laid in water)
nymph (molts several times as it grows in the water)
dun (a winged stage that leaves the water, but does not mate; this stage molts to form the next state)
spinner (the sexually mature stage that mates and lays eggs)

Quick Reply

You have to be logged in to post on the forum. It's this easy:
Username:          Email:

Password:    Confirm Password:

I am at least 13 years old and agree to the rules.

Related Discussions

TitleRepliesLast Reply
Re: the debate is over!
In General Discussion by Strmfshr
16Feb 21, 2010
by Troutnut
Re: life cycle
In General Discussion by Ladder34
2Aug 28, 2011
by Sayfu
Re: Montana Western March Brown Dun
In the Photography Board by Leskorcala
2Apr 10, 2020
by Partsman
Re: Mayflies: subimago to imago .... ?
In General Discussion by Quillgordon
25May 2, 2007
by Quillgordon
Re: White Mayfly ---- Euphron leukon?
In the Identify This! Board by JumpNotZero
1Sep 9, 2008
Re: Little White Mayfly
In General Discussion by Lastchance
6Aug 1, 2009
by Taxon
Re: deligon
In the Stonefly Family Nemouridae by Deligon
2Jan 22, 2010
by Martinlf
Re: Wow
In Female Baetisca laurentina Mayfly Dun by Taxon
1Jun 26, 2006
by Troutnut
Re: Breaking all the rules!
In General Discussion by BulBob
4Aug 14, 2008
by HighFlyer
Re: confused
In General Discussion by Leakywaders
3Dec 20, 2015
by CaseyP
Most Recent Posts
Re: Are mayflies declining?
In General Discussion by Wiflyfisher (Adirman replied)