(Wish I could add a comment without replying to a specific person. That possible?)
I appreciate all the info. Am still working on identifying them. Ordered a macro lens for my camera that should be here soon. I hope id don't suck. Was only $3.00 on ebay, but I can't afford to send $200-$400 on a macro lens.
I'm not sure if these are clues, but here's what little info I have on them...
They started appearing right after I planted part of my garden around labor day. They're the full size of a European Honey bee and look nearly identical. They have the shorter (squarish) wings with only a bit of a point. Their wings are separated like many bee species with a larger upper wing and a smaller, thinner pointier wing that combines with the upper wing to look like one larger wing.
In my ignorance, I pulled one of them off a radish plant that was clamped to one of the seed pods (thinking it was dead). I sprayed some of my plants with neem oil to kill flea beetles and then for 2-3 days all the bees disappeared, so I thought I killed them with the neem oil. Them 2-3 days were a little cooler/colder than usual, but they came back when it got warmer again, so they apparently prefer the hot days.... Anyways, I thought the bee was dead. I touched it several times and it didn't move. I pulled it off and put it in a container to take pictures of it with my microscope camera, but it started moving again (slow and "retarded" looking, falling all over the place). I then took it back outside and it clamped right back onto the radish seed pod and went back to sleep (didn't know they slept, so was confused before).
This species definitely has a stinger. He got irritated when I tried to pull him off a second time, because he was upside-down (not that it mattered) and his stinger came out really far and with great flexibility.
Also, The bees from the original nest appear to be digging new holes fairly close to the original nest (not sure if all ground dwelling species do that). I could be wrong about that, but I have video that shows 2-3 of them at times going into cracks in the ground and digging or making a hole in the middle of the crack. Unfortunately, if that's what they're doing, they haven't succeeded much. Is there any way I can help them? (lightly watering often, not watering at all, starting small holes through the tougher sun-hardened soil, adding more soft/organic material, etc...?
I was just reading elsewhere today that European Honey Bees do build nests under-ground, but that it's not ideal for them. (I don't know if that is true or not, but I wish I saved the link to post on here).
Also, will they eat pollen? (I ordered a 1oz packet of wildflower pollen for them, but now am reading that some people say not to feed them, because it can bring on swarming, predators, wasps and other bad things. I just want to leave them tiny amounts here and there to help them.)
After this though (besides maybe a little pollen here and there) I'm going to try to leave them alone, at-least until I'm less ignorant. I just know mankind, in our ignorance cause a lot of damage to nature while trying to help it and/or control it... A good example would be Yellowstone and how we increased the elk population only to cause it to completely crash and then caused the endangerment and extinction of many other species of other animals/plants.)
Thanks again everyone.