A tumbling flower beetle (Family Mordellidae) hangs onto a filament of a rhododendron blossom while feeding on pollen.

This aerodynamic-looking beetle is a member of family Mordellidae, the tumbling flower beetles. BugGuide.net has a remark that suggests this common name references their acrobatics when trying to make an escape. Which sounds quite appropriate to me under the net of a blisteringly cold Monday morning.