Confidence: I'm as sure as I can be.
Notes: These look to be Black silverhorn caddisflies. Very long antennae, black wings, and red eyes in the male. There are two possible species - Mystacides azurea tends to have a metallic bluish tint to the wings whereas M nigra is all black. It's hard to be sure of subtle colour differences from a photo but I would suggest there is a bluish sheen to the wings here.