Note: size is from tip of head (not antennae) to tip of abdomen (not counting unidentified poopy thing).
Please excuse the pill-bottle orange film over the pics. It is, in fact, currently residing in an orange pill bottle. You're not missing much -- it's black black with a red-orange ("Bitersweet" Crayola marker red/orange) stripe.
It's powdered (wings and body) like a butterfly/moth, and has a curled...straw-tongue like a butterfly (sorry, it was really thin and didn't show up with my old camera). This straw is tucked away when not in use (you only see one ring protruding from the head, and you don't really know what it is unless it drops down).
The wings caught my attention. Only 2 wings (so, not butterfly/moth, then?), and the second/lower half of the wings are clear, with thick black veins and 'hem'. Usually it's almost fully open when at rest, or else it is folded under the upper half, so you don't see it (see other pics). Each wing is also about 2cm long.
The legs looks quite like moths and butterflies too, though... T_T
Found in my back yard, under the peach tree and caught at the cedar evergreens.
When outdoors, resting, the abdomen lay flat. When indoors (or, from captivity onwards) the abdomen tends to be angled strictly upwards. And oftentimes the transparent egg/worm/unidentified thing poops out a little. I really doubt it's a stinger. It's transparent, and the non-tip end has more color, sometimes pulsing a little (think worm swallowing under a microscope). When I first caught this fellow, this unidentified anal object was nowhere to be seen.