I guess this is a wasp, but I don't really know its real name. I love the colors of the legs in full yellow in contrast with the totally black body and wings.
Two pupae seemingly of different maturities, the left being more mature than that at the right. However, it looks like the left is a bit unhealthy to promote a healthy adult butterfly, as it seems pressed at the middle.
This is the exoskeleton or exuvia of a grasshopper, which already emerged as a full adult. This might have been left for a while as the lower abdomen is already missing, could already have been detached. I didn't even see the adult in its vicinity.