The Skawla stonefly is also called the Spring Stonefly in many areas because it
usually hatches in the spring. They are species of the Perlodidae Skawla
genus. This hatch is often overlooked by anglers because it takes place early at
the start of the season when they think the water is still too cold for good fly
fishing. They are similar to Salmonflies in appearance and behavior; however,
they are not as large as the Salmonflies. They can easily be confused with
These are actually Little Yellow Stoneflies. They are rather large and quite
different from the other Little Yellows and therefore require separate imitations.
Depending on what part of their range they exist in, you will find them hatching
from as early as December and as late as April, in water that is about 50
They prefer clear, cold, fast water streams. They can become active as soon as
the water reaches 40 degrees. Most places you find them will have gravel or a
cobble bottom. They are very poor swimmers. There area of distribution isn't a
large one. They are extremely plentiful on Rock Creek, Montana and the Yuba
River in Washington but exist in many other streams.
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