A friend and her daughter dropped by this afternoon. When I opened the door, they were discussing the little blobby things on the pumpkin in the planter. Daughter thought they were bird poop. Mom thought they were insects.
Mom wins. They are ladybird beetle (ladybug) pupae, or at least one of them is. The other used to be, but appears to have transformed. Notice the wreath of thorns around the spot where the pupa attaches to the pumpkin. This is the shed skin of the very spiky larva.