A half inch wingspan is very small, so I'm wondering if these are tiny moths?
There are many small butterflies, so I couldn't hazzard a guess without a picture or at least a description.
Sherry

(You're not referring to the dandelion butterfly of the other posting, right?)

Certain pyralid moths, partial to mint but will visit a variety of blossoms, are tiny and fly about during the day.

Do yours have a dainty, fluttering flight or do they dart around?

Some of the Gossamer-wing Butterflies on the list below are pretty tiny. I'm seeing lots of blue Azures right now that will gather where it's muddy after I water. The decription says their wingspan can be over an inch but I'm going to measure one. They don't look that big to me. lol

I put in your state on the link.

Here is a link that might be useful: Butterflies and Moths of North America - Tennessee

I'm wondering if Kathy might be seeing some little skippers. I've been noticing them in my yard.

I have a very, very tiny butterfly on my computer screen right now. It has a half inch wingspan, thin body, and is clear with black ribs on it. I've never seen so small a butterfly. It's alive, inside my house, and it just arrived and landed on my screen. I have a couple of very fuzzy pictures I'll attach.

I believe it's a butterfly, because it doesn't fold up its wings when it lands, but lays them out flat. I'm taking a picture with my I Pad, and this little guy is right next to the submit button on this page. Can anyone identify? Thanks! Aleta

Thank you so much for the information! Finding this delicate little thing was the highlight of my day, and I was super curious.

There are some truly tiny, but true butterflies. Pictures and discussion about one seen in San Antonio is HERE.

I saw a very tiny butterfly on my tomato plant. Less than half inch long and very brightly coloured like a nymphalid. Only saw it for a second. [England-London].Does anyone know what it might be?

Nearly all butterfly families include brightly-colored species, was there something else that reminded you of a nymphalid? Most likely it was a moth. What were some of the colors?