Charlie, these images are such a treat!
Sometimes I think we ought to start up a "Stump Mr. Krebs" Challenge of the Week. The idea would be that everybody kicks in their most outrageous idea for a subject that can't possibly be photogenic, we all pick one, and then of course your part is to go demonstrate otherwise.

The size of the award would depend on the delight of the demonstration, and, uh... Nope, that'd get too expensive!
Caddisflies got tailhooks, and they're pretty?! Who would'a thought?
--Rik