Can you identify the tiny light blue 'furry' flies I found in our garden?

Question

I'm in NE Kansas and have been finding these tiny flies that have what looks like a light blue furry body. It's not furry like a spider, but more like the tufty, fuzzy look of a feather boa. They are just a bit bigger than a fruit fly and I haven't observed them landing on anything, just being around- I can't say what they eat, and thus can't identify them that way. My daughters have nicknamed them 'yoshys' because they seemed so alien. I've lived here for 30 years and haven't ever seen them!

Anyone have any idea?

Not the long-legged fly, as it's a typical shiny fly- these are more like a gnat in build, but the body looks like a light blue puff of downy fur.

Unfortunately, we can't seem to find any now- they appeared all over through June and July, but are now nowhere to be found. Great, huh? I'll keep looking so I can get them identified!
Thing is, they don't look anything like any of these- they look like a large fruit fly wearing a pale blue cookie-monster costume...and I'm not making this up- I'm baffled. Weird little tiny fuzzy flying bugs.

Answer 1

any chance of a picture? That would help greatly. Here's a website that might prove helpful:

http://www.einsteins-emporium.com/life/animal-info/insects/insect_identification_winged.htm

Answer 2

Condylostylid Long-legged Fly?

Answer 3

Woolly aphids.