CENTRAL FLORIDA CRITTER OF THE DAY: Spotless Lady Beetle (Cycloneda sanguinea)
a.k.a. Blood-Red Ladybird Beetle
Keep in mind that Not all ladybugs without spots are native. Harmonia is an introduced species which can outcompete our natives, especially the species in the photo. (source: https://esa.confex.com/esa/2001/techprogram/paper_1422.htm)
If you buy ladybugs, check what species you are introducing. Many sold commercially are non-native species.
Shown on Florida Native Plant: Bidens alba