Little Yellow Stoneflies
.............................Fly Fishing Yellowstone National Park

Little Yellow Stoneflies (Perlodidae Family)

The Periodidae family of stoneflies is properly called "Little Yellow Stoneflies". Often
anglers incorrectly refer to just about any of the species of Little Yellow Stoneflies as
"Yellow Sallies". The Yellow Sallies are species of the Perlodidae
Isoperla genus of
stoneflies or the Stripetails.
These species of Little Yellow Stoneflies have been found in Wyoming. I am not at all
certain that they all exist in Yellowstone National Park but I would guess that most of
them are. I am listing these only to point out that there are a lot of different species of
Little Yellow Stoneflies. Fortunately, they all are very similar in looks and behavior, so it
is not important to know them by species.

Perlodidae  Arcynopteryx  compacta .....Arctic Springfly
Perlodidae  Cultus  aestivalis Summer .....Springfly
Perlodidae  Cultus  tostonus .....Toston Springfly
Perlodidae  Diura  knowltoni .....Nearctic Springfly
Perlodidae  Isogenoides  colubrinus .....Blackfoot Springfly
Perlodidae  Isogenoides  elongatus .....Elongate Springfly
Perlodidae  Isoperla  fulva .....Western Stripetail
Perlodidae  Isoperla  fusca .....Waterton Stripetail
Perlodidae  Isoperla  longiseta .....Plains Stripetail
Perlodidae  Isoperla  mormona .....Mormon Stripetail
Perlodidae  Isoperla  petersoni .....Springs Stripetail
Perlodidae  Isoperla  phalerata .....Rockies Stripetail
Perlodidae  Isoperla  pinta .....Checkered Stripetail
Perlodidae  Isoperla  quinquepunctata.....Fivespot Stripetail
Perlodidae  Isoperla  sobria .....Colorado Stripetail
Perlodidae  Isoperla  transmarina .....Boreal Stripetail
Perlodidae  Kogotus  modestus .....Sickle Springfly
Perlodidae  Kogotus  nonus .....Smooth Springfly
Perlodidae  Megarcys  signata .....Larimide Springfly
Perlodidae  Perlinodes  aurea .....Longgill Springfly
Perlodidae  Pictetiella  expansa .....Autumn Springfly
Perlodidae  Skwala  americana .....American Springfly
Perlodidae  Skwala  curvata .....Curved Springfly

Coming Up Next:
Little Yellow Stoneflies - Nymphs

Copyright 2008 James