The Flower bees are a diverse group of pollinators and are common on flowers in summer and fall. There are about 12 genera with Dialictus being the largest in our area. Often called sweat bees because they enjoy human forearms and heads with a good sweat coverage. They can be tiny but several are half or more the size of honey bees. They come in an array of metallic and non-metallic colors. The members of the genus Sphecodes often have red or orange abdomens and are parasitic on the other ground nesting Halictidae.

There is a beautiful pictorial Florida genus key here:

Tough photographic subjects because they are active and small. I will add more images as I get them.