STONE FLIES
Stoneflies are the largest of the trout stream insects, and also among the easiest to identify. For the nymphs, the two large antennae, two tails, and three tarsal segments are a dead giveaway. The adults sport two sets of wings that fold flat on top of the body when the insect is at rest.
For more details check out these websites:
www.troutnut.com/hatch/13/Insect-Plecoptera-Stoneflies
www.uky.edu/Ag/CritterFiles/casefile/insects/stoneflies/stoneflies.htm
Here are some photos of specimens I have collected from various streams in Colorado:
STONE FLY NYMPHS
Stoneflies are the largest of the trout stream insects, and also among the easiest to identify. For the nymphs, the two large antennae, two tails, and three tarsal segments are a dead giveaway. The adults sport two sets of wings that fold flat on top of the body when the insect is at rest.
For more details check out these websites:
www.troutnut.com/hatch/13/Insect-Plecoptera-Stoneflies
www.uky.edu/Ag/CritterFiles/casefile/insects/stoneflies/stoneflies.htm
Here are some photos of specimens I have collected from various streams in Colorado:
STONE FLY NYMPHS