Relative Size Comparison . . . The chart below reflects the actual relative sizes of various insect larval and adult stages.  They are not perfect, but close enough for practical, comparative purposes.

 

 

Larva sizes chart
Larva size chart


Adult size chart
Adult size chart

Species

immature    

     adult

"American Grannom"
caddisfly
"Blue Winged Olive"
mayfly
"Early Black Stonefly"
stonefly
"Giant Salmonfly"
stonefly
"Golden Stonefly"
stonefly
"Great Lead Winged Drake"
mayfly
"Green Drake"
mayfly
"Light Cahill"
mayfly
"Little Orange Caddis"
caddis
"Little Yellow Stone"
mayfly
"Orange Micro Caddis"
microcaddis
"Quill Gordon"
mayfly
"Small Spotted Sedge"
caddis

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