I can see you

I found a creature, with long thin antennae and straight wings that look remarkably leaf-like, hiding amongst the leaves of a shrub in my garden. It's a katydid.

I believe the male produces sounds by rubbing the wings together, and other katydids can hear the sounds with an ear (tympanum) on each front leg just below the knee. Human ears are funny looking things really, but can you imagine if they'd ended up on our knees instead of our heads?