Callibaetis are the most numerous mayflies in many of the Western
Hemisphere's lakes, ponds and slow moving streams. In rich alkaline
lakes, these insects can hatch in such numbers to mimic clouds of smoke.
Trout, bass and panfish all eat Callibaetis Mayflies in the nymph, dun
and spinner stages. The Organza Wing Callibaetis Spinner is the most
popular pattern for the spinner fall of these insects. Callibaetis spinners can lay their egs and fall dead during the latter stages of a hatch of duns of the same species. Spinners can remain on the water long after the duns are gone. These spinners can greatly extend your dry fly fishing, but only if you have the right flies in sufficient numbers.
Organza is a thin, sheer fabric traditionally made
from silk. Many modern organzas are woven with synthetic filament fibers
such as polyester or nylon. Traditionally a fabric used to make brides
and harem women more attractive, Organza has found favor with fly tiers
for several applications, such as the clear spent wings of mayfly
spinners; the fabric is cut in narrow strips with the fibers running
parallel. Then the strip is tied cross-wise of the hook. After the rest
of the fly is tied, the cross fibers are easily picked out to leave only
the fibers that were tied perpendicular to the hook. These clear
crinkled fibers are lightweight and when treated with floatant will
support the fly on the surface of calm water. The crinkles in the fibers
give a sparkley effect just like real clear mayfly spinner wings.
Organza fibers have become the most popular material for this