This is probably an adult female Florida leaf-footed bug (Acanthocephala femorata) — this species is named for the exaggerated “femurs” on its back legs, and the femurs are larger in the male, with impressive spikes. She’s about an inch long, not including her antennae.
Leaf-footed bugs are named after the “leafy” extensions of their hind feet and legs, and are related to the similarly-shaped stinkbug. They come with an impressive pokey bit at the front (piercing/sucking mouthparts), which can be more than half the length of the insect’s body. This is normally used to penetrate the plants whose juices they eat, but can also be used for defense (ow). They do have wings and are good fliers. The wings overlap across the back with a characteristic teardrop-shaped “shield” which can have some nifty patterning.
Eggs are laid in spring, end-to-end in little strands. Adults overwinter in groups called aggregations. After the first hatching in the spring, all life stages can be found together.
They aren’t usually a problem in gardens, but they can damage plants (they eat sap, flowers, cones, fruit, and seeds) and are sometimes considered pests. They also occasionally move into homes as the weather gets colder, looking for a warm place to spend the winter.