I really love caddisflies. I think they are probably my favorite aquatic insect. They are fascinating and diverse- so many types of cases and nets and even those rebellious free living larvae. And the Rhyacophilidae (those free living rebels I mentioned) are one of my favorite families. They are badass tiny predators- look at those buff and almost raptorial forelegs! They have cute squishy bodies with well-defined segments and handsome claws on their prolegs. And the genera we get in my area tend to come in either a dusky purple like the above specimen, or a charmingly bright green.