Welcome to the forum, Ed! If you still have the specimen, try for some dorsal closeups of the anterior head capsule. It would be better if the bias is anterior (taken from a front angle) to match the slope of the head. A good lateral of the fore-leg area to catch the trochantin and a lateral of the anal prolegs would be helpful as well. We should be able to clear things up for you on the family and probably take it to the genus level - perhaps even species if we're lucky. If you can't, I'd be happy to tell you what to look for.
Don't know what to make of those cases.
It's probably a philopotamid (finger-net caddis) but I can't see enough to rule out Polycentropodidae (Trumpet-net caddis) entirely, though. Head spots are on the most common but it is my understanding that not all have them.
It is hard to see from the photo but it looks like the frontoclypeal apotome might be notched which would make it Chimarra sp..
I agree that something is going on there. Assuming it to be a philopotamid, Wormaldia
(Little Autumn Sedge) is rounded but Dolophilodes distinctus
(Winter Caddis) is also notched, though less radically (more of a wave than the spiked graph chart or deep "V" of Chimarra
). Like you, I just can't make out the frontoclyptus well enough to tell one way or the other. For what it's worth, the dark edge between the pronotum and the meso is a better match for what I've seen on winter caddis larvae. On Chimarra
specimens, I've noticed they are much more convex.