It looks like a potter wasp.

No it doesn't.

Loribee - Perhaps you can find your bug on the link below...

Greg
Southern Nevada

Here is a link that might be useful: Insect Identification

Greg, I didn't find it, but bookmarked the site, as so far it's the best I've seen to help identify insects. Thanks much for the link!

And thanks Dan and Rhizo. I'm not sure it's a wasp as it's actions are more reflective of a fly than beelike, if that makes any sense. Also, the blow-up of the photo might misrepresent the bug as bigger than it is. It's actually extremely tiny. I've always thought of wasps as larger than that. But if I were an expert, I wouldn't be asking! LOL

In any event, it seems pretty inert for the time being. They're hanging out on my wet bok choi, but I haven't seen them hurt anything.

Ant?

I'd really need to see more pictures to be able to tell what this is. For example, we can't see the abdomen. The antennae look fly-like to me, but the rest of the head does not....though a different picture might tell a different story!

It's clearly very small...small enough to be a parasitoid. Judge the size of the insect by the veins on the leaf it's sitting on. There are species of flies AND wasps that are parasitoids, but this one just isn't ringing a bell with me. Sorry.

Organicdan, the potter's wasp is several times larger than this little guy, and also has much longer antennae.

Pretty sure it's a flying ant. Google it and compare.

Flying ant it might be. Thanks everyone for the suggestions! I had never figured entimology would go so hand-in-hand with vegetable gardening!