This common name refers to only one phylum.
These are pretty much always called Arthropods.
Arthropods include just about everything trout eat except for minnows, worms, and leeches.
Rhyacophila (Green Sedges) Caddisfly Pupa
View 11 PicturesI collected this pupa and several like it from the same stream and on the same day as this larva. I suspect they're the same species. Every pupa I collected was in a brown casing like the one shown in one of the pictures below. I cut this pupa out of its case after a picture so you can see more details. It is close to but not fully developed.
Collected June 5, 2005
from in Added to Troutnut.com by on May 25, 2006